diff --git a/compose.yaml b/compose.yaml
index 678feae..6dac42f 100644
--- a/compose.yaml
+++ b/compose.yaml
@@ -7,4 +7,13 @@ services:
     environment:
       - POSTGRES_DB=tbp_core
       - POSTGRES_USER=tbp_user
-      - POSTGRES_PASSWORD=local_secret_password
\ No newline at end of file
+      - POSTGRES_PASSWORD=local_secret_password
+  # Recorded answers of Steam, Twitch/IGDB and speedrun.com (local/wiremock). Starts only with the local profile.
+  wiremock:
+    image: wiremock/wiremock:3.9.1
+    container_name: tbp_core_mocks_local
+    profiles: ["local"]
+    ports:
+      - "8089:8080"
+    volumes:
+      - ./local/wiremock:/home/wiremock
diff --git a/local/wiremock/__files/igdb-external-games.json b/local/wiremock/__files/igdb-external-games.json
new file mode 100644
index 0000000..5f1ce9c
--- /dev/null
+++ b/local/wiremock/__files/igdb-external-games.json
@@ -0,0 +1,34 @@
+[
+  {
+    "game": 72,
+    "uid": "620"
+  },
+  {
+    "game": 113112,
+    "uid": "1145360"
+  },
+  {
+    "game": 17000,
+    "uid": "413150"
+  },
+  {
+    "game": 7046,
+    "uid": "427520"
+  },
+  {
+    "game": 26226,
+    "uid": "504230"
+  },
+  {
+    "game": 14593,
+    "uid": "367520"
+  },
+  {
+    "game": 233,
+    "uid": "220"
+  },
+  {
+    "game": 133236,
+    "uid": "892970"
+  }
+]
diff --git a/local/wiremock/__files/igdb-game-113112.json b/local/wiremock/__files/igdb-game-113112.json
new file mode 100644
index 0000000..e60b67f
--- /dev/null
+++ b/local/wiremock/__files/igdb-game-113112.json
@@ -0,0 +1,27 @@
+[
+  {
+    "id": 113112,
+    "name": "Hades",
+    "first_release_date": 1600387200,
+    "cover": {
+      "image_id": "co1r7f"
+    },
+    "platforms": [
+      {
+        "name": "PC (Microsoft Windows)",
+        "abbreviation": "PC"
+      },
+      {
+        "name": "Nintendo Switch",
+        "abbreviation": "Switch"
+      }
+    ],
+    "total_rating_count": 1500,
+    "external_games": [
+      {
+        "external_game_source": 1,
+        "uid": "1145360"
+      }
+    ]
+  }
+]
diff --git a/local/wiremock/__files/igdb-game-119388.json b/local/wiremock/__files/igdb-game-119388.json
new file mode 100644
index 0000000..68d3c77
--- /dev/null
+++ b/local/wiremock/__files/igdb-game-119388.json
@@ -0,0 +1,17 @@
+[
+  {
+    "id": 119388,
+    "name": "The Legend of Zelda: Tears of the Kingdom",
+    "first_release_date": 1683849600,
+    "cover": {
+      "image_id": "co1r7f"
+    },
+    "platforms": [
+      {
+        "name": "Nintendo Switch",
+        "abbreviation": "Switch"
+      }
+    ],
+    "total_rating_count": 900
+  }
+]
diff --git a/local/wiremock/__files/igdb-game-26226.json b/local/wiremock/__files/igdb-game-26226.json
new file mode 100644
index 0000000..b8e6155
--- /dev/null
+++ b/local/wiremock/__files/igdb-game-26226.json
@@ -0,0 +1,27 @@
+[
+  {
+    "id": 26226,
+    "name": "Celeste",
+    "first_release_date": 1516838400,
+    "cover": {
+      "image_id": "co1r7f"
+    },
+    "platforms": [
+      {
+        "name": "PC (Microsoft Windows)",
+        "abbreviation": "PC"
+      },
+      {
+        "name": "Nintendo Switch",
+        "abbreviation": "Switch"
+      }
+    ],
+    "total_rating_count": 1300,
+    "external_games": [
+      {
+        "external_game_source": 1,
+        "uid": "504230"
+      }
+    ]
+  }
+]
diff --git a/local/wiremock/__files/igdb-game-search.json b/local/wiremock/__files/igdb-game-search.json
new file mode 100644
index 0000000..94c9823
--- /dev/null
+++ b/local/wiremock/__files/igdb-game-search.json
@@ -0,0 +1,67 @@
+[
+  {
+    "id": 119388,
+    "name": "The Legend of Zelda: Tears of the Kingdom",
+    "first_release_date": 1683849600,
+    "cover": {
+      "image_id": "co1r7f"
+    },
+    "platforms": [
+      {
+        "name": "Nintendo Switch",
+        "abbreviation": "Switch"
+      }
+    ],
+    "total_rating_count": 900
+  },
+  {
+    "id": 113112,
+    "name": "Hades",
+    "first_release_date": 1600387200,
+    "cover": {
+      "image_id": "co1r7f"
+    },
+    "platforms": [
+      {
+        "name": "PC (Microsoft Windows)",
+        "abbreviation": "PC"
+      },
+      {
+        "name": "Nintendo Switch",
+        "abbreviation": "Switch"
+      }
+    ],
+    "total_rating_count": 1500,
+    "external_games": [
+      {
+        "external_game_source": 1,
+        "uid": "1145360"
+      }
+    ]
+  },
+  {
+    "id": 26226,
+    "name": "Celeste",
+    "first_release_date": 1516838400,
+    "cover": {
+      "image_id": "co1r7f"
+    },
+    "platforms": [
+      {
+        "name": "PC (Microsoft Windows)",
+        "abbreviation": "PC"
+      },
+      {
+        "name": "Nintendo Switch",
+        "abbreviation": "Switch"
+      }
+    ],
+    "total_rating_count": 1300,
+    "external_games": [
+      {
+        "external_game_source": 1,
+        "uid": "504230"
+      }
+    ]
+  }
+]
diff --git a/local/wiremock/__files/igdb-game-years.json b/local/wiremock/__files/igdb-game-years.json
new file mode 100644
index 0000000..4c7a023
--- /dev/null
+++ b/local/wiremock/__files/igdb-game-years.json
@@ -0,0 +1,38 @@
+[
+  {
+    "id": 72,
+    "first_release_date": 1303171200
+  },
+  {
+    "id": 113112,
+    "first_release_date": 1600387200
+  },
+  {
+    "id": 17000,
+    "first_release_date": 1456444800
+  },
+  {
+    "id": 7046,
+    "first_release_date": 1600387200
+  },
+  {
+    "id": 26226,
+    "first_release_date": 1516838400
+  },
+  {
+    "id": 14593,
+    "first_release_date": 1487980800
+  },
+  {
+    "id": 233,
+    "first_release_date": 1100736000
+  },
+  {
+    "id": 133236,
+    "first_release_date": 1612828800
+  },
+  {
+    "id": 119388,
+    "first_release_date": 1683849600
+  }
+]
diff --git a/local/wiremock/__files/igdb-tags.json b/local/wiremock/__files/igdb-tags.json
new file mode 100644
index 0000000..c007c50
--- /dev/null
+++ b/local/wiremock/__files/igdb-tags.json
@@ -0,0 +1,257 @@
+[
+  {
+    "id": 72,
+    "genres": [
+      {
+        "name": "Puzzle"
+      },
+      {
+        "name": "Platform"
+      },
+      {
+        "name": "Shooter"
+      }
+    ],
+    "themes": [
+      {
+        "name": "Science fiction"
+      },
+      {
+        "name": "Comedy"
+      }
+    ],
+    "game_modes": [
+      {
+        "name": "Single player"
+      },
+      {
+        "name": "Co-operative"
+      }
+    ]
+  },
+  {
+    "id": 113112,
+    "genres": [
+      {
+        "name": "Role-playing (RPG)"
+      },
+      {
+        "name": "Hack and slash/Beat 'em up"
+      },
+      {
+        "name": "Indie"
+      }
+    ],
+    "themes": [
+      {
+        "name": "Action"
+      },
+      {
+        "name": "Fantasy"
+      }
+    ],
+    "game_modes": [
+      {
+        "name": "Single player"
+      }
+    ]
+  },
+  {
+    "id": 17000,
+    "genres": [
+      {
+        "name": "Role-playing (RPG)"
+      },
+      {
+        "name": "Simulator"
+      },
+      {
+        "name": "Indie"
+      }
+    ],
+    "themes": [
+      {
+        "name": "Sandbox"
+      }
+    ],
+    "game_modes": [
+      {
+        "name": "Single player"
+      },
+      {
+        "name": "Multiplayer"
+      },
+      {
+        "name": "Co-operative"
+      }
+    ]
+  },
+  {
+    "id": 7046,
+    "genres": [
+      {
+        "name": "Simulator"
+      },
+      {
+        "name": "Strategy"
+      },
+      {
+        "name": "Indie"
+      }
+    ],
+    "themes": [
+      {
+        "name": "Science fiction"
+      },
+      {
+        "name": "Sandbox"
+      },
+      {
+        "name": "Survival"
+      }
+    ],
+    "game_modes": [
+      {
+        "name": "Single player"
+      },
+      {
+        "name": "Multiplayer"
+      }
+    ]
+  },
+  {
+    "id": 26226,
+    "genres": [
+      {
+        "name": "Platform"
+      },
+      {
+        "name": "Indie"
+      }
+    ],
+    "themes": [
+      {
+        "name": "Action"
+      }
+    ],
+    "game_modes": [
+      {
+        "name": "Single player"
+      }
+    ]
+  },
+  {
+    "id": 14593,
+    "genres": [
+      {
+        "name": "Platform"
+      },
+      {
+        "name": "Adventure"
+      },
+      {
+        "name": "Indie"
+      }
+    ],
+    "themes": [
+      {
+        "name": "Action"
+      },
+      {
+        "name": "Fantasy"
+      }
+    ],
+    "game_modes": [
+      {
+        "name": "Single player"
+      }
+    ]
+  },
+  {
+    "id": 233,
+    "genres": [
+      {
+        "name": "Shooter"
+      }
+    ],
+    "themes": [
+      {
+        "name": "Action"
+      },
+      {
+        "name": "Science fiction"
+      }
+    ],
+    "game_modes": [
+      {
+        "name": "Single player"
+      }
+    ]
+  },
+  {
+    "id": 133236,
+    "genres": [
+      {
+        "name": "Adventure"
+      },
+      {
+        "name": "Indie"
+      },
+      {
+        "name": "Simulator"
+      }
+    ],
+    "themes": [
+      {
+        "name": "Action"
+      },
+      {
+        "name": "Fantasy"
+      },
+      {
+        "name": "Sandbox"
+      },
+      {
+        "name": "Survival"
+      }
+    ],
+    "game_modes": [
+      {
+        "name": "Single player"
+      },
+      {
+        "name": "Multiplayer"
+      },
+      {
+        "name": "Co-operative"
+      }
+    ]
+  },
+  {
+    "id": 119388,
+    "genres": [
+      {
+        "name": "Adventure"
+      },
+      {
+        "name": "Role-playing (RPG)"
+      }
+    ],
+    "themes": [
+      {
+        "name": "Action"
+      },
+      {
+        "name": "Fantasy"
+      },
+      {
+        "name": "Open world"
+      }
+    ],
+    "game_modes": [
+      {
+        "name": "Single player"
+      }
+    ]
+  }
+]
diff --git a/local/wiremock/__files/igdb-time-to-beats.json b/local/wiremock/__files/igdb-time-to-beats.json
new file mode 100644
index 0000000..7d9ac0e
--- /dev/null
+++ b/local/wiremock/__files/igdb-time-to-beats.json
@@ -0,0 +1,58 @@
+[
+  {
+    "game_id": 72,
+    "hastily": 21600,
+    "normally": 32400,
+    "completely": 79200,
+    "count": 100
+  },
+  {
+    "game_id": 113112,
+    "hastily": 72000,
+    "normally": 90000,
+    "completely": 342000,
+    "count": 100
+  },
+  {
+    "game_id": 17000,
+    "hastily": 144000,
+    "normally": 190800,
+    "completely": 576000,
+    "count": 100
+  },
+  {
+    "game_id": 7046,
+    "hastily": 108000,
+    "normally": 216000,
+    "completely": 900000,
+    "count": 100
+  },
+  {
+    "game_id": 26226,
+    "hastily": 28800,
+    "normally": 43200,
+    "completely": 144000,
+    "count": 100
+  },
+  {
+    "game_id": 14593,
+    "hastily": 97200,
+    "normally": 147600,
+    "completely": 226800,
+    "count": 100
+  },
+  {
+    "game_id": 233,
+    "hastily": 43200,
+    "normally": 50400,
+    "completely": 68400,
+    "count": 100
+  },
+  {
+    "game_id": 119388,
+    "hastily": 180000,
+    "normally": 216000,
+    "completely": 684000,
+    "count": 100
+  }
+]
diff --git a/local/wiremock/__files/speedrun-games-celeste.json b/local/wiremock/__files/speedrun-games-celeste.json
new file mode 100644
index 0000000..48f29d3
--- /dev/null
+++ b/local/wiremock/__files/speedrun-games-celeste.json
@@ -0,0 +1,17 @@
+{
+  "data": [
+    {
+      "id": "o1y9j9v6",
+      "names": {
+        "international": "Celeste"
+      },
+      "released": 2018,
+      "weblink": "https://www.speedrun.com/celeste",
+      "links": [
+        {
+          "rel": "self"
+        }
+      ]
+    }
+  ]
+}
diff --git a/local/wiremock/__files/speedrun-runs-celeste.json b/local/wiremock/__files/speedrun-runs-celeste.json
new file mode 100644
index 0000000..c85860b
--- /dev/null
+++ b/local/wiremock/__files/speedrun-runs-celeste.json
@@ -0,0 +1,7 @@
+{
+  "data": [
+    {
+      "id": "y8dwozoj"
+    }
+  ]
+}
diff --git a/local/wiremock/__files/steam-global-percentages-504230.json b/local/wiremock/__files/steam-global-percentages-504230.json
new file mode 100644
index 0000000..b2e84c2
--- /dev/null
+++ b/local/wiremock/__files/steam-global-percentages-504230.json
@@ -0,0 +1,22 @@
+{
+  "achievementpercentages": {
+    "achievements": [
+      {
+        "name": "FIRST_STEPS",
+        "percent": 88.0
+      },
+      {
+        "name": "CRYSTAL_HEART",
+        "percent": 35.2
+      },
+      {
+        "name": "SUMMIT",
+        "percent": 30.6
+      },
+      {
+        "name": "FAREWELL",
+        "percent": 5.9
+      }
+    ]
+  }
+}
diff --git a/local/wiremock/__files/steam-global-percentages-620.json b/local/wiremock/__files/steam-global-percentages-620.json
new file mode 100644
index 0000000..1effc03
--- /dev/null
+++ b/local/wiremock/__files/steam-global-percentages-620.json
@@ -0,0 +1,22 @@
+{
+  "achievementpercentages": {
+    "achievements": [
+      {
+        "name": "ACH_WAKE_UP",
+        "percent": 92.1
+      },
+      {
+        "name": "ACH_SURVIVE_CONTAINMENT",
+        "percent": 70.4
+      },
+      {
+        "name": "ACH_CO_OP",
+        "percent": 22.5
+      },
+      {
+        "name": "ACH_END_SP",
+        "percent": 48.3
+      }
+    ]
+  }
+}
diff --git a/local/wiremock/__files/steam-owned-games.json b/local/wiremock/__files/steam-owned-games.json
new file mode 100644
index 0000000..e8ed248
--- /dev/null
+++ b/local/wiremock/__files/steam-owned-games.json
@@ -0,0 +1,71 @@
+{
+  "response": {
+    "game_count": 8,
+    "games": [
+      {
+        "appid": 620,
+        "name": "Portal 2",
+        "playtime_forever": 1450,
+        "playtime_2weeks": null,
+        "img_icon_url": "",
+        "has_community_visible_stats": true
+      },
+      {
+        "appid": 1145360,
+        "name": "Hades",
+        "playtime_forever": 3200,
+        "playtime_2weeks": 240,
+        "img_icon_url": "",
+        "has_community_visible_stats": true
+      },
+      {
+        "appid": 413150,
+        "name": "Stardew Valley",
+        "playtime_forever": 5400,
+        "playtime_2weeks": null,
+        "img_icon_url": "",
+        "has_community_visible_stats": true
+      },
+      {
+        "appid": 427520,
+        "name": "Factorio",
+        "playtime_forever": 12000,
+        "playtime_2weeks": 600,
+        "img_icon_url": "",
+        "has_community_visible_stats": true
+      },
+      {
+        "appid": 504230,
+        "name": "Celeste",
+        "playtime_forever": 800,
+        "playtime_2weeks": null,
+        "img_icon_url": "",
+        "has_community_visible_stats": true
+      },
+      {
+        "appid": 367520,
+        "name": "Hollow Knight",
+        "playtime_forever": 0,
+        "playtime_2weeks": null,
+        "img_icon_url": "",
+        "has_community_visible_stats": true
+      },
+      {
+        "appid": 220,
+        "name": "Half-Life 2",
+        "playtime_forever": 780,
+        "playtime_2weeks": null,
+        "img_icon_url": "",
+        "has_community_visible_stats": true
+      },
+      {
+        "appid": 892970,
+        "name": "Valheim",
+        "playtime_forever": 90,
+        "playtime_2weeks": 90,
+        "img_icon_url": "",
+        "has_community_visible_stats": true
+      }
+    ]
+  }
+}
diff --git a/local/wiremock/__files/steam-player-achievements-504230.json b/local/wiremock/__files/steam-player-achievements-504230.json
new file mode 100644
index 0000000..bbfd790
--- /dev/null
+++ b/local/wiremock/__files/steam-player-achievements-504230.json
@@ -0,0 +1,29 @@
+{
+  "playerstats": {
+    "steamID": "76561198000000001",
+    "gameName": "Celeste",
+    "success": true,
+    "achievements": [
+      {
+        "apiname": "FIRST_STEPS",
+        "achieved": 1,
+        "unlocktime": 1700000000
+      },
+      {
+        "apiname": "CRYSTAL_HEART",
+        "achieved": 1,
+        "unlocktime": 1700003600
+      },
+      {
+        "apiname": "SUMMIT",
+        "achieved": 0,
+        "unlocktime": 0
+      },
+      {
+        "apiname": "FAREWELL",
+        "achieved": 0,
+        "unlocktime": 0
+      }
+    ]
+  }
+}
diff --git a/local/wiremock/__files/steam-player-achievements-620.json b/local/wiremock/__files/steam-player-achievements-620.json
new file mode 100644
index 0000000..466a03b
--- /dev/null
+++ b/local/wiremock/__files/steam-player-achievements-620.json
@@ -0,0 +1,29 @@
+{
+  "playerstats": {
+    "steamID": "76561198000000001",
+    "gameName": "Portal 2",
+    "success": true,
+    "achievements": [
+      {
+        "apiname": "ACH_WAKE_UP",
+        "achieved": 1,
+        "unlocktime": 1700000000
+      },
+      {
+        "apiname": "ACH_SURVIVE_CONTAINMENT",
+        "achieved": 1,
+        "unlocktime": 1700003600
+      },
+      {
+        "apiname": "ACH_CO_OP",
+        "achieved": 0,
+        "unlocktime": 0
+      },
+      {
+        "apiname": "ACH_END_SP",
+        "achieved": 1,
+        "unlocktime": 1700010800
+      }
+    ]
+  }
+}
diff --git a/local/wiremock/__files/steam-player-summary.json b/local/wiremock/__files/steam-player-summary.json
new file mode 100644
index 0000000..d800453
--- /dev/null
+++ b/local/wiremock/__files/steam-player-summary.json
@@ -0,0 +1,12 @@
+{
+  "response": {
+    "players": [
+      {
+        "steamid": "76561198000000001",
+        "personaname": "Dev",
+        "profileurl": "https://steamcommunity.com/profiles/76561198000000001/",
+        "avatarfull": "https://avatars.steamstatic.com/fef49e7fa7e1997310d705b2a6158ff8dc1cdfeb_full.jpg"
+      }
+    ]
+  }
+}
diff --git a/local/wiremock/__files/steam-schema-504230.json b/local/wiremock/__files/steam-schema-504230.json
new file mode 100644
index 0000000..1bd6f42
--- /dev/null
+++ b/local/wiremock/__files/steam-schema-504230.json
@@ -0,0 +1,42 @@
+{
+  "game": {
+    "gameName": "Celeste",
+    "gameVersion": "1",
+    "availableGameStats": {
+      "achievements": [
+        {
+          "name": "FIRST_STEPS",
+          "displayName": "First Steps",
+          "description": "Complete the Prologue.",
+          "hidden": 0,
+          "icon": "https://cdn.cloudflare.steamstatic.com/steam/apps/504230/capsule_184x69.jpg",
+          "icongray": "https://cdn.cloudflare.steamstatic.com/steam/apps/504230/capsule_184x69.jpg"
+        },
+        {
+          "name": "CRYSTAL_HEART",
+          "displayName": "Heart of the Mountain",
+          "description": "Collect a Crystal Heart.",
+          "hidden": 0,
+          "icon": "https://cdn.cloudflare.steamstatic.com/steam/apps/504230/capsule_184x69.jpg",
+          "icongray": "https://cdn.cloudflare.steamstatic.com/steam/apps/504230/capsule_184x69.jpg"
+        },
+        {
+          "name": "SUMMIT",
+          "displayName": "Summit",
+          "description": "Reach the summit and finish the story.",
+          "hidden": 0,
+          "icon": "https://cdn.cloudflare.steamstatic.com/steam/apps/504230/capsule_184x69.jpg",
+          "icongray": "https://cdn.cloudflare.steamstatic.com/steam/apps/504230/capsule_184x69.jpg"
+        },
+        {
+          "name": "FAREWELL",
+          "displayName": "Farewell",
+          "description": "Complete Chapter 9.",
+          "hidden": 0,
+          "icon": "https://cdn.cloudflare.steamstatic.com/steam/apps/504230/capsule_184x69.jpg",
+          "icongray": "https://cdn.cloudflare.steamstatic.com/steam/apps/504230/capsule_184x69.jpg"
+        }
+      ]
+    }
+  }
+}
diff --git a/local/wiremock/__files/steam-schema-620.json b/local/wiremock/__files/steam-schema-620.json
new file mode 100644
index 0000000..40937cd
--- /dev/null
+++ b/local/wiremock/__files/steam-schema-620.json
@@ -0,0 +1,42 @@
+{
+  "game": {
+    "gameName": "Portal 2",
+    "gameVersion": "1",
+    "availableGameStats": {
+      "achievements": [
+        {
+          "name": "ACH_WAKE_UP",
+          "displayName": "Wake Up Call",
+          "description": "Survive the manual override of the relaxation center.",
+          "hidden": 0,
+          "icon": "https://cdn.cloudflare.steamstatic.com/steam/apps/620/capsule_184x69.jpg",
+          "icongray": "https://cdn.cloudflare.steamstatic.com/steam/apps/620/capsule_184x69.jpg"
+        },
+        {
+          "name": "ACH_SURVIVE_CONTAINMENT",
+          "displayName": "Pit Boss",
+          "description": "Show that pit who is boss.",
+          "hidden": 0,
+          "icon": "https://cdn.cloudflare.steamstatic.com/steam/apps/620/capsule_184x69.jpg",
+          "icongray": "https://cdn.cloudflare.steamstatic.com/steam/apps/620/capsule_184x69.jpg"
+        },
+        {
+          "name": "ACH_CO_OP",
+          "displayName": "Team Building",
+          "description": "Complete all test chambers in the Team Building co-op course.",
+          "hidden": 0,
+          "icon": "https://cdn.cloudflare.steamstatic.com/steam/apps/620/capsule_184x69.jpg",
+          "icongray": "https://cdn.cloudflare.steamstatic.com/steam/apps/620/capsule_184x69.jpg"
+        },
+        {
+          "name": "ACH_END_SP",
+          "displayName": "Lunacy",
+          "description": "Complete the single player campaign.",
+          "hidden": 0,
+          "icon": "https://cdn.cloudflare.steamstatic.com/steam/apps/620/capsule_184x69.jpg",
+          "icongray": "https://cdn.cloudflare.steamstatic.com/steam/apps/620/capsule_184x69.jpg"
+        }
+      ]
+    }
+  }
+}
diff --git a/local/wiremock/__files/steam-store-items.json b/local/wiremock/__files/steam-store-items.json
new file mode 100644
index 0000000..f5d2f40
--- /dev/null
+++ b/local/wiremock/__files/steam-store-items.json
@@ -0,0 +1,34 @@
+{
+  "response": {
+    "store_items": [
+      {
+        "appid": 1030300,
+        "success": 1,
+        "name": "Hollow Knight: Silksong",
+        "best_purchase_option": {
+          "formatted_final_price": "19,50€",
+          "formatted_original_price": "19,50€",
+          "discount_pct": 0
+        },
+        "assets": {
+          "asset_url_format": "steam/apps/1030300/${FILENAME}",
+          "header": "header.jpg"
+        }
+      },
+      {
+        "appid": 1145350,
+        "success": 1,
+        "name": "Hades II",
+        "best_purchase_option": {
+          "formatted_final_price": "22,49€",
+          "formatted_original_price": "29,99€",
+          "discount_pct": 25
+        },
+        "assets": {
+          "asset_url_format": "steam/apps/1145350/${FILENAME}",
+          "header": "header.jpg"
+        }
+      }
+    ]
+  }
+}
diff --git a/local/wiremock/__files/steam-wishlist.json b/local/wiremock/__files/steam-wishlist.json
new file mode 100644
index 0000000..62d3d5e
--- /dev/null
+++ b/local/wiremock/__files/steam-wishlist.json
@@ -0,0 +1,14 @@
+{
+  "response": {
+    "items": [
+      {
+        "appid": 1030300,
+        "date_added": 1735689600
+      },
+      {
+        "appid": 1145350,
+        "date_added": 1735776000
+      }
+    ]
+  }
+}
diff --git a/local/wiremock/__files/twitch-token.json b/local/wiremock/__files/twitch-token.json
new file mode 100644
index 0000000..9c7ba42
--- /dev/null
+++ b/local/wiremock/__files/twitch-token.json
@@ -0,0 +1,5 @@
+{
+  "access_token": "local",
+  "expires_in": 5000000,
+  "token_type": "bearer"
+}
diff --git a/local/wiremock/mappings/igdb-external-games.json b/local/wiremock/mappings/igdb-external-games.json
new file mode 100644
index 0000000..806fd62
--- /dev/null
+++ b/local/wiremock/mappings/igdb-external-games.json
@@ -0,0 +1,13 @@
+{
+  "request": {
+    "method": "POST",
+    "urlPath": "/igdb/external_games"
+  },
+  "response": {
+    "status": 200,
+    "headers": {
+      "Content-Type": "application/json"
+    },
+    "bodyFileName": "igdb-external-games.json"
+  }
+}
diff --git a/local/wiremock/mappings/igdb-game-113112.json b/local/wiremock/mappings/igdb-game-113112.json
new file mode 100644
index 0000000..779338a
--- /dev/null
+++ b/local/wiremock/mappings/igdb-game-113112.json
@@ -0,0 +1,18 @@
+{
+  "request": {
+    "method": "POST",
+    "urlPath": "/igdb/games",
+    "bodyPatterns": [
+      {
+        "contains": "where id = 113112;"
+      }
+    ]
+  },
+  "response": {
+    "status": 200,
+    "headers": {
+      "Content-Type": "application/json"
+    },
+    "bodyFileName": "igdb-game-113112.json"
+  }
+}
diff --git a/local/wiremock/mappings/igdb-game-119388.json b/local/wiremock/mappings/igdb-game-119388.json
new file mode 100644
index 0000000..b84111f
--- /dev/null
+++ b/local/wiremock/mappings/igdb-game-119388.json
@@ -0,0 +1,18 @@
+{
+  "request": {
+    "method": "POST",
+    "urlPath": "/igdb/games",
+    "bodyPatterns": [
+      {
+        "contains": "where id = 119388;"
+      }
+    ]
+  },
+  "response": {
+    "status": 200,
+    "headers": {
+      "Content-Type": "application/json"
+    },
+    "bodyFileName": "igdb-game-119388.json"
+  }
+}
diff --git a/local/wiremock/mappings/igdb-game-26226.json b/local/wiremock/mappings/igdb-game-26226.json
new file mode 100644
index 0000000..cbeee83
--- /dev/null
+++ b/local/wiremock/mappings/igdb-game-26226.json
@@ -0,0 +1,18 @@
+{
+  "request": {
+    "method": "POST",
+    "urlPath": "/igdb/games",
+    "bodyPatterns": [
+      {
+        "contains": "where id = 26226;"
+      }
+    ]
+  },
+  "response": {
+    "status": 200,
+    "headers": {
+      "Content-Type": "application/json"
+    },
+    "bodyFileName": "igdb-game-26226.json"
+  }
+}
diff --git a/local/wiremock/mappings/igdb-game-search.json b/local/wiremock/mappings/igdb-game-search.json
new file mode 100644
index 0000000..bdf2201
--- /dev/null
+++ b/local/wiremock/mappings/igdb-game-search.json
@@ -0,0 +1,18 @@
+{
+  "request": {
+    "method": "POST",
+    "urlPath": "/igdb/games",
+    "bodyPatterns": [
+      {
+        "contains": "search \""
+      }
+    ]
+  },
+  "response": {
+    "status": 200,
+    "headers": {
+      "Content-Type": "application/json"
+    },
+    "bodyFileName": "igdb-game-search.json"
+  }
+}
diff --git a/local/wiremock/mappings/igdb-game-years.json b/local/wiremock/mappings/igdb-game-years.json
new file mode 100644
index 0000000..4890a5d
--- /dev/null
+++ b/local/wiremock/mappings/igdb-game-years.json
@@ -0,0 +1,18 @@
+{
+  "request": {
+    "method": "POST",
+    "urlPath": "/igdb/games",
+    "bodyPatterns": [
+      {
+        "contains": "fields first_release_date;"
+      }
+    ]
+  },
+  "response": {
+    "status": 200,
+    "headers": {
+      "Content-Type": "application/json"
+    },
+    "bodyFileName": "igdb-game-years.json"
+  }
+}
diff --git a/local/wiremock/mappings/igdb-games-none.json b/local/wiremock/mappings/igdb-games-none.json
new file mode 100644
index 0000000..6ba2699
--- /dev/null
+++ b/local/wiremock/mappings/igdb-games-none.json
@@ -0,0 +1,14 @@
+{
+  "request": {
+    "method": "POST",
+    "urlPath": "/igdb/games"
+  },
+  "response": {
+    "status": 200,
+    "headers": {
+      "Content-Type": "application/json"
+    },
+    "jsonBody": []
+  },
+  "priority": 10
+}
diff --git a/local/wiremock/mappings/igdb-tags.json b/local/wiremock/mappings/igdb-tags.json
new file mode 100644
index 0000000..59e649c
--- /dev/null
+++ b/local/wiremock/mappings/igdb-tags.json
@@ -0,0 +1,18 @@
+{
+  "request": {
+    "method": "POST",
+    "urlPath": "/igdb/games",
+    "bodyPatterns": [
+      {
+        "contains": "genres.name"
+      }
+    ]
+  },
+  "response": {
+    "status": 200,
+    "headers": {
+      "Content-Type": "application/json"
+    },
+    "bodyFileName": "igdb-tags.json"
+  }
+}
diff --git a/local/wiremock/mappings/igdb-time-to-beats.json b/local/wiremock/mappings/igdb-time-to-beats.json
new file mode 100644
index 0000000..ca2aa42
--- /dev/null
+++ b/local/wiremock/mappings/igdb-time-to-beats.json
@@ -0,0 +1,13 @@
+{
+  "request": {
+    "method": "POST",
+    "urlPath": "/igdb/game_time_to_beats"
+  },
+  "response": {
+    "status": 200,
+    "headers": {
+      "Content-Type": "application/json"
+    },
+    "bodyFileName": "igdb-time-to-beats.json"
+  }
+}
diff --git a/local/wiremock/mappings/speedrun-games-celeste.json b/local/wiremock/mappings/speedrun-games-celeste.json
new file mode 100644
index 0000000..9d06294
--- /dev/null
+++ b/local/wiremock/mappings/speedrun-games-celeste.json
@@ -0,0 +1,18 @@
+{
+  "request": {
+    "method": "GET",
+    "urlPath": "/speedrun/games",
+    "queryParameters": {
+      "name": {
+        "equalTo": "Celeste"
+      }
+    }
+  },
+  "response": {
+    "status": 200,
+    "headers": {
+      "Content-Type": "application/json"
+    },
+    "bodyFileName": "speedrun-games-celeste.json"
+  }
+}
diff --git a/local/wiremock/mappings/speedrun-games-none.json b/local/wiremock/mappings/speedrun-games-none.json
new file mode 100644
index 0000000..fb49fad
--- /dev/null
+++ b/local/wiremock/mappings/speedrun-games-none.json
@@ -0,0 +1,16 @@
+{
+  "request": {
+    "method": "GET",
+    "urlPath": "/speedrun/games"
+  },
+  "response": {
+    "status": 200,
+    "headers": {
+      "Content-Type": "application/json"
+    },
+    "jsonBody": {
+      "data": []
+    }
+  },
+  "priority": 10
+}
diff --git a/local/wiremock/mappings/speedrun-runs-celeste.json b/local/wiremock/mappings/speedrun-runs-celeste.json
new file mode 100644
index 0000000..4b78190
--- /dev/null
+++ b/local/wiremock/mappings/speedrun-runs-celeste.json
@@ -0,0 +1,18 @@
+{
+  "request": {
+    "method": "GET",
+    "urlPath": "/speedrun/runs",
+    "queryParameters": {
+      "game": {
+        "equalTo": "o1y9j9v6"
+      }
+    }
+  },
+  "response": {
+    "status": 200,
+    "headers": {
+      "Content-Type": "application/json"
+    },
+    "bodyFileName": "speedrun-runs-celeste.json"
+  }
+}
diff --git a/local/wiremock/mappings/speedrun-runs-none.json b/local/wiremock/mappings/speedrun-runs-none.json
new file mode 100644
index 0000000..b4c114f
--- /dev/null
+++ b/local/wiremock/mappings/speedrun-runs-none.json
@@ -0,0 +1,16 @@
+{
+  "request": {
+    "method": "GET",
+    "urlPath": "/speedrun/runs"
+  },
+  "response": {
+    "status": 200,
+    "headers": {
+      "Content-Type": "application/json"
+    },
+    "jsonBody": {
+      "data": []
+    }
+  },
+  "priority": 10
+}
diff --git a/local/wiremock/mappings/steam-global-percentages-504230.json b/local/wiremock/mappings/steam-global-percentages-504230.json
new file mode 100644
index 0000000..a217f6e
--- /dev/null
+++ b/local/wiremock/mappings/steam-global-percentages-504230.json
@@ -0,0 +1,18 @@
+{
+  "request": {
+    "method": "GET",
+    "urlPath": "/steam/ISteamUserStats/GetGlobalAchievementPercentagesForApp/v2/",
+    "queryParameters": {
+      "gameid": {
+        "equalTo": "504230"
+      }
+    }
+  },
+  "response": {
+    "status": 200,
+    "headers": {
+      "Content-Type": "application/json"
+    },
+    "bodyFileName": "steam-global-percentages-504230.json"
+  }
+}
diff --git a/local/wiremock/mappings/steam-global-percentages-620.json b/local/wiremock/mappings/steam-global-percentages-620.json
new file mode 100644
index 0000000..d68f4f7
--- /dev/null
+++ b/local/wiremock/mappings/steam-global-percentages-620.json
@@ -0,0 +1,18 @@
+{
+  "request": {
+    "method": "GET",
+    "urlPath": "/steam/ISteamUserStats/GetGlobalAchievementPercentagesForApp/v2/",
+    "queryParameters": {
+      "gameid": {
+        "equalTo": "620"
+      }
+    }
+  },
+  "response": {
+    "status": 200,
+    "headers": {
+      "Content-Type": "application/json"
+    },
+    "bodyFileName": "steam-global-percentages-620.json"
+  }
+}
diff --git a/local/wiremock/mappings/steam-global-percentages-none.json b/local/wiremock/mappings/steam-global-percentages-none.json
new file mode 100644
index 0000000..f70c552
--- /dev/null
+++ b/local/wiremock/mappings/steam-global-percentages-none.json
@@ -0,0 +1,18 @@
+{
+  "request": {
+    "method": "GET",
+    "urlPath": "/steam/ISteamUserStats/GetGlobalAchievementPercentagesForApp/v2/"
+  },
+  "response": {
+    "status": 200,
+    "headers": {
+      "Content-Type": "application/json"
+    },
+    "jsonBody": {
+      "achievementpercentages": {
+        "achievements": []
+      }
+    }
+  },
+  "priority": 10
+}
diff --git a/local/wiremock/mappings/steam-owned-games.json b/local/wiremock/mappings/steam-owned-games.json
new file mode 100644
index 0000000..46c7a36
--- /dev/null
+++ b/local/wiremock/mappings/steam-owned-games.json
@@ -0,0 +1,13 @@
+{
+  "request": {
+    "method": "GET",
+    "urlPath": "/steam/IPlayerService/GetOwnedGames/v1/"
+  },
+  "response": {
+    "status": 200,
+    "headers": {
+      "Content-Type": "application/json"
+    },
+    "bodyFileName": "steam-owned-games.json"
+  }
+}
diff --git a/local/wiremock/mappings/steam-player-achievements-504230.json b/local/wiremock/mappings/steam-player-achievements-504230.json
new file mode 100644
index 0000000..1a05217
--- /dev/null
+++ b/local/wiremock/mappings/steam-player-achievements-504230.json
@@ -0,0 +1,18 @@
+{
+  "request": {
+    "method": "GET",
+    "urlPath": "/steam/ISteamUserStats/GetPlayerAchievements/v1/",
+    "queryParameters": {
+      "appid": {
+        "equalTo": "504230"
+      }
+    }
+  },
+  "response": {
+    "status": 200,
+    "headers": {
+      "Content-Type": "application/json"
+    },
+    "bodyFileName": "steam-player-achievements-504230.json"
+  }
+}
diff --git a/local/wiremock/mappings/steam-player-achievements-620.json b/local/wiremock/mappings/steam-player-achievements-620.json
new file mode 100644
index 0000000..04f2dba
--- /dev/null
+++ b/local/wiremock/mappings/steam-player-achievements-620.json
@@ -0,0 +1,18 @@
+{
+  "request": {
+    "method": "GET",
+    "urlPath": "/steam/ISteamUserStats/GetPlayerAchievements/v1/",
+    "queryParameters": {
+      "appid": {
+        "equalTo": "620"
+      }
+    }
+  },
+  "response": {
+    "status": 200,
+    "headers": {
+      "Content-Type": "application/json"
+    },
+    "bodyFileName": "steam-player-achievements-620.json"
+  }
+}
diff --git a/local/wiremock/mappings/steam-player-achievements-none.json b/local/wiremock/mappings/steam-player-achievements-none.json
new file mode 100644
index 0000000..7cdf89b
--- /dev/null
+++ b/local/wiremock/mappings/steam-player-achievements-none.json
@@ -0,0 +1,19 @@
+{
+  "request": {
+    "method": "GET",
+    "urlPath": "/steam/ISteamUserStats/GetPlayerAchievements/v1/"
+  },
+  "response": {
+    "status": 400,
+    "headers": {
+      "Content-Type": "application/json"
+    },
+    "jsonBody": {
+      "playerstats": {
+        "error": "Requested app has no stats",
+        "success": false
+      }
+    }
+  },
+  "priority": 10
+}
diff --git a/local/wiremock/mappings/steam-player-summary.json b/local/wiremock/mappings/steam-player-summary.json
new file mode 100644
index 0000000..152f1f5
--- /dev/null
+++ b/local/wiremock/mappings/steam-player-summary.json
@@ -0,0 +1,13 @@
+{
+  "request": {
+    "method": "GET",
+    "urlPath": "/steam/ISteamUser/GetPlayerSummaries/v0002/"
+  },
+  "response": {
+    "status": 200,
+    "headers": {
+      "Content-Type": "application/json"
+    },
+    "bodyFileName": "steam-player-summary.json"
+  }
+}
diff --git a/local/wiremock/mappings/steam-schema-504230.json b/local/wiremock/mappings/steam-schema-504230.json
new file mode 100644
index 0000000..95d5e66
--- /dev/null
+++ b/local/wiremock/mappings/steam-schema-504230.json
@@ -0,0 +1,18 @@
+{
+  "request": {
+    "method": "GET",
+    "urlPath": "/steam/ISteamUserStats/GetSchemaForGame/v2/",
+    "queryParameters": {
+      "appid": {
+        "equalTo": "504230"
+      }
+    }
+  },
+  "response": {
+    "status": 200,
+    "headers": {
+      "Content-Type": "application/json"
+    },
+    "bodyFileName": "steam-schema-504230.json"
+  }
+}
diff --git a/local/wiremock/mappings/steam-schema-620.json b/local/wiremock/mappings/steam-schema-620.json
new file mode 100644
index 0000000..cd53855
--- /dev/null
+++ b/local/wiremock/mappings/steam-schema-620.json
@@ -0,0 +1,18 @@
+{
+  "request": {
+    "method": "GET",
+    "urlPath": "/steam/ISteamUserStats/GetSchemaForGame/v2/",
+    "queryParameters": {
+      "appid": {
+        "equalTo": "620"
+      }
+    }
+  },
+  "response": {
+    "status": 200,
+    "headers": {
+      "Content-Type": "application/json"
+    },
+    "bodyFileName": "steam-schema-620.json"
+  }
+}
diff --git a/local/wiremock/mappings/steam-schema-none.json b/local/wiremock/mappings/steam-schema-none.json
new file mode 100644
index 0000000..8b2586a
--- /dev/null
+++ b/local/wiremock/mappings/steam-schema-none.json
@@ -0,0 +1,14 @@
+{
+  "request": {
+    "method": "GET",
+    "urlPath": "/steam/ISteamUserStats/GetSchemaForGame/v2/"
+  },
+  "response": {
+    "status": 400,
+    "headers": {
+      "Content-Type": "application/json"
+    },
+    "jsonBody": {}
+  },
+  "priority": 10
+}
diff --git a/local/wiremock/mappings/steam-store-items.json b/local/wiremock/mappings/steam-store-items.json
new file mode 100644
index 0000000..b8e533b
--- /dev/null
+++ b/local/wiremock/mappings/steam-store-items.json
@@ -0,0 +1,13 @@
+{
+  "request": {
+    "method": "GET",
+    "urlPath": "/steam/IStoreBrowseService/GetItems/v1/"
+  },
+  "response": {
+    "status": 200,
+    "headers": {
+      "Content-Type": "application/json"
+    },
+    "bodyFileName": "steam-store-items.json"
+  }
+}
diff --git a/local/wiremock/mappings/steam-wishlist.json b/local/wiremock/mappings/steam-wishlist.json
new file mode 100644
index 0000000..64a77cf
--- /dev/null
+++ b/local/wiremock/mappings/steam-wishlist.json
@@ -0,0 +1,13 @@
+{
+  "request": {
+    "method": "GET",
+    "urlPath": "/steam/IWishlistService/GetWishlist/v1/"
+  },
+  "response": {
+    "status": 200,
+    "headers": {
+      "Content-Type": "application/json"
+    },
+    "bodyFileName": "steam-wishlist.json"
+  }
+}
diff --git a/local/wiremock/mappings/twitch-token.json b/local/wiremock/mappings/twitch-token.json
new file mode 100644
index 0000000..c9cd673
--- /dev/null
+++ b/local/wiremock/mappings/twitch-token.json
@@ -0,0 +1,13 @@
+{
+  "request": {
+    "method": "POST",
+    "urlPath": "/twitch/oauth2/token"
+  },
+  "response": {
+    "status": 200,
+    "headers": {
+      "Content-Type": "application/json"
+    },
+    "bodyFileName": "twitch-token.json"
+  }
+}
diff --git a/readme.md b/readme.md
index 0513069..ba1c603 100644
--- a/readme.md
+++ b/readme.md
@@ -264,7 +264,46 @@ a second row when IGDB learns its Steam appid later and the user owns it on Stea
 
 ## Run locally
 
-Needs Java 25 and Docker.
+### Local development without keys (profile `local`)
+
+The whole stack runs on your machine with no API keys and no calls to Steam, Twitch/IGDB or speedrun.com. Needs
+Java 25, Node 24 and Docker. Clone `ToBePlayed-Auth`, `ToBePlayed-Core` and `ToBePlayed-Frontend` next to each
+other, then start them in this order (Core also starts without Auth and finds it later):
+
+1. **Auth**: in `ToBePlayed-Auth`, `./mvnw spring-boot:run -Dspring-boot.run.profiles=local`
+   (IDE: active profile `local`). Port 8080.
+2. **Core**: in `ToBePlayed-Core`, `./mvnw spring-boot:run -Dspring-boot.run.profiles=local`. Port 8090.
+3. **Frontend**: in `ToBePlayed-Frontend`, `npm install`, then `npm run dev`, and open `http://localhost:5173`
+   (`localhost`, not `127.0.0.1`, so the browser sends the login cookies to every local port). The development
+   values must be `VITE_API_URL=http://localhost:8080` and `VITE_CORE_API_URL=http://localhost:8090`.
+4. **Log in** with `dev@localhost` / `password123`. On the dashboard, start a Steam sync: the library fills with 8
+   games, achievements, time to beat, moods, a wishlist and one speedrun game from recorded answers.
+
+What the `local` profile does:
+
+- Spring Boot's Docker Compose support starts each service's `compose.yaml`: PostgreSQL for Auth (port 5432) and
+  for Core (port 5433), and in Core a WireMock container (port 8089, compose profile `local`) that answers in
+  place of Steam, Twitch/IGDB and speedrun.com from `ToBePlayed-Core/local/wiremock`.
+- Auth makes a new signing key at each start (`LocalKeysEnvironmentPostProcessor`, only in this profile), so no
+  key is in the repo. After an Auth restart (also a devtools restart), log in again.
+- Never use `local` on a server: it adds an admin with a public password. Auth refuses `local` together with
+  `prod`.
+- Auth adds the dev user (Flyway callback in `db/local`): role `PLATFORM_ADMIN`, so user, auditor and admin pages
+  can all be tried ("View as" in the menu switches down), and a linked Steam ID that the recorded Steam answers
+  belong to. The invite code for more users is `local`.
+- Core checks the login with Auth's local JWKS, like in production.
+- The browser still loads game pictures from the Steam and IGDB image servers; offline they stay gray.
+- "Sign in through Steam" still opens the real Steam page (no key needed). The dev user is already linked.
+- A request to WireMock that has no recording answers 404 and shows up in Core's log.
+
+To change the recorded answers, edit the JSON in `local/wiremock/mappings` (which request) and
+`local/wiremock/__files` (the answer), then restart Core (it restarts the container). `LocalMocksParseTest` checks
+that every answer still fits the adapters' response types. `http://localhost:8089/__admin/requests` lists what Core
+asked.
+
+### With the real services (profile `dev`)
+
+Needs Java 25, Docker and your own keys.
 
 ```bash
 ./mvnw spring-boot:run -Dspring-boot.run.profiles=dev
diff --git a/src/main/java/core_service/modules/igdb_adapter/service/IgdbApiService.java b/src/main/java/core_service/modules/igdb_adapter/service/IgdbApiService.java
index c178818..5664d20 100644
--- a/src/main/java/core_service/modules/igdb_adapter/service/IgdbApiService.java
+++ b/src/main/java/core_service/modules/igdb_adapter/service/IgdbApiService.java
@@ -20,6 +20,7 @@ import java.util.Arrays;
 import java.util.Comparator;
 import java.util.Collection;
 import java.util.HashMap;
+import java.util.HashSet;
 import java.util.LinkedHashSet;
 import java.util.List;
 import java.util.Map;
@@ -275,13 +276,14 @@ public class IgdbApiService {
             List<Long> ids = List.copyOf(igdbIds);
             Map<Long, TimeToBeat> result = new HashMap<>();
             for (int from = 0; from < ids.size(); from += BATCH) {
-                String gameIds = ids.subList(from, Math.min(from + BATCH, ids.size())).stream()
-                        .map(String::valueOf).collect(Collectors.joining(","));
+                List<Long> batchIds = ids.subList(from, Math.min(from + BATCH, ids.size()));
+                Set<Long> batch = new HashSet<>(batchIds);
+                String gameIds = batchIds.stream().map(String::valueOf).collect(Collectors.joining(","));
                 IgdbResponses.TimeToBeat[] times = query("/game_time_to_beats",
                         "fields game_id,hastily,normally,completely,count; where game_id = (" + gameIds + "); limit " + LIMIT + ";",
                         IgdbResponses.TimeToBeat[].class);
                 for (IgdbResponses.TimeToBeat time : times) {
-                    if (time.gameId() != null) {
+                    if (time.gameId() != null && batch.contains(time.gameId())) {
                         result.putIfAbsent(time.gameId(),
                                 new TimeToBeat(minutes(time.hastily()), minutes(time.normally()), minutes(time.completely())));
                     }
@@ -353,8 +355,10 @@ public class IgdbApiService {
                 "fields genres.name,themes.name,game_modes.name; where id = (" + gameIds + "); limit " + LIMIT + ";",
                 IgdbResponses.GameTags[].class);
         Map<Long, GameTags> result = new HashMap<>();
+        // Only the asked ids, in this and the other lookups: callers index their maps by them, and an answer can
+        // hold more games.
         for (IgdbResponses.GameTags game : games) {
-            if (game.id() != null) {
+            if (game.id() != null && igdbIds.contains(game.id())) {
                 result.put(game.id(), new GameTags(names(game.genres()), names(game.themes()), names(game.gameModes())));
             }
         }
@@ -371,7 +375,7 @@ public class IgdbApiService {
                 IgdbResponses.Game[].class);
         Map<Long, Integer> result = new HashMap<>();
         for (IgdbResponses.Game game : games) {
-            if (game.id() != null && game.firstReleaseDate() != null) {
+            if (game.id() != null && game.firstReleaseDate() != null && igdbIds.contains(game.id())) {
                 result.put(game.id(), year(game.firstReleaseDate()));
             }
         }
@@ -397,7 +401,8 @@ public class IgdbApiService {
                 IgdbResponses.ExternalGame[].class);
         Map<Long, List<Long>> steamByIgdb = new HashMap<>();
         for (IgdbResponses.ExternalGame external : externals) {
-            if (external.game() != null && external.uid() != null && external.uid().matches("\\d+")) {
+            if (external.game() != null && external.uid() != null && external.uid().matches("\\d+")
+                    && steamAppids.contains(Long.parseLong(external.uid()))) {
                 steamByIgdb.computeIfAbsent(external.game(), game -> new ArrayList<>()).add(Long.parseLong(external.uid()));
             }
         }
diff --git a/src/main/resources/application-local.yml b/src/main/resources/application-local.yml
new file mode 100644
index 0000000..10b6c5d
--- /dev/null
+++ b/src/main/resources/application-local.yml
@@ -0,0 +1,31 @@
+# Local development without keys or third parties: start with the profile "local" (alone), after Auth's local
+# profile. Postgres and WireMock (local/wiremock) come from compose.yaml. See the readme, "Run locally".
+spring:
+  docker:
+    compose:
+      profiles:
+        active: local
+      # Also when Postgres still runs from a dev run; else WireMock would not start.
+      start:
+        skip: never
+
+security:
+  jwt:
+    jwks-url: "http://localhost:8080/.well-known/jwks.json"
+
+app:
+  cors:
+    allowed-origins: "http://localhost:5173"
+  steam:
+    api-key: local
+    base-url: "http://localhost:8089/steam"
+  igdb:
+    client-id: local
+    client-secret: local
+    base-url: "http://localhost:8089/igdb"
+    token-base-url: "http://localhost:8089/twitch"
+  speedrun:
+    base-url: "http://localhost:8089/speedrun"
+  library:
+    # The image repair checks the real Steam CDN.
+    image-repair-cron: "-"
diff --git a/src/test/java/core_service/configuration/LocalMocksParseTest.java b/src/test/java/core_service/configuration/LocalMocksParseTest.java
new file mode 100644
index 0000000..ec032cb
--- /dev/null
+++ b/src/test/java/core_service/configuration/LocalMocksParseTest.java
@@ -0,0 +1,104 @@
+package core_service.configuration;
+
+import core_service.modules.igdb_adapter.api.dto.response.IgdbResponses;
+import core_service.modules.speedrun_adapter.api.dto.response.SpeedrunResponses;
+import core_service.modules.steam_adapter.api.dto.response.SteamGlobalAchievementPercentagesResponse;
+import core_service.modules.steam_adapter.api.dto.response.SteamOwnedGamesResponse;
+import core_service.modules.steam_adapter.api.dto.response.SteamPlayerAchievementsResponse;
+import core_service.modules.steam_adapter.api.dto.response.SteamPlayerSummaryResponse;
+import core_service.modules.steam_adapter.api.dto.response.SteamSchemaForGameResponse;
+import core_service.modules.steam_adapter.api.dto.response.SteamStoreItemsResponse;
+import core_service.modules.steam_adapter.api.dto.response.SteamWishlistResponse;
+import core_service.shared.test.AbstractUnitTest;
+import org.junit.jupiter.api.Test;
+import tools.jackson.databind.JsonNode;
+import tools.jackson.databind.json.JsonMapper;
+
+import java.io.IOException;
+import java.lang.reflect.RecordComponent;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.util.List;
+import java.util.Map;
+import java.util.stream.Stream;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+/**
+ * The recorded answers of the local profile (local/wiremock) still fit the adapters' response types.
+ */
+class LocalMocksParseTest extends AbstractUnitTest {
+
+    private static final Path FILES = Path.of("local/wiremock/__files");
+    private static final Path MAPPINGS = Path.of("local/wiremock/mappings");
+
+    // By file name prefix; no prefix starts another one.
+    private static final Map<String, Class<?>> TYPES = Map.ofEntries(
+            Map.entry("steam-owned-games", SteamOwnedGamesResponse.class),
+            Map.entry("steam-player-summary", SteamPlayerSummaryResponse.class),
+            Map.entry("steam-wishlist", SteamWishlistResponse.class),
+            Map.entry("steam-store-items", SteamStoreItemsResponse.class),
+            Map.entry("steam-schema-", SteamSchemaForGameResponse.class),
+            Map.entry("steam-global-percentages-", SteamGlobalAchievementPercentagesResponse.class),
+            Map.entry("steam-player-achievements-", SteamPlayerAchievementsResponse.class),
+            Map.entry("twitch-token", IgdbResponses.Token.class),
+            Map.entry("igdb-external-games", IgdbResponses.ExternalGame[].class),
+            Map.entry("igdb-time-to-beats", IgdbResponses.TimeToBeat[].class),
+            Map.entry("igdb-tags", IgdbResponses.GameTags[].class),
+            Map.entry("igdb-game-", IgdbResponses.Game[].class),
+            Map.entry("speedrun-games-", SpeedrunResponses.Games.class),
+            Map.entry("speedrun-runs-", SpeedrunResponses.Runs.class));
+
+    private final JsonMapper jsonMapper = JsonMapper.builder().build();
+
+    @Test
+    void everyMapping_PointsToAnExistingAnswer() throws IOException {
+        List<Path> mappings;
+        try (Stream<Path> listed = Files.list(MAPPINGS)) {
+            mappings = listed.sorted().toList();
+        }
+        assertThat(mappings).isNotEmpty();
+
+        for (Path mapping : mappings) {
+            JsonNode response = jsonMapper.readTree(mapping.toFile()).path("response");
+            assertThat(response.has("bodyFileName") || response.has("jsonBody")).as(mapping.toString()).isTrue();
+            if (response.has("bodyFileName")) {
+                assertThat(FILES.resolve(response.get("bodyFileName").asString())).as(mapping.toString()).exists();
+            }
+        }
+    }
+
+    // Every top-level field of an answer, and the first field (the id) of every list element, is not null.
+    private static void assertFilled(String name, Object parsed) throws ReflectiveOperationException {
+        if (parsed instanceof Object[] elements) {
+            assertThat(elements).as(name).isNotEmpty();
+            for (Object element : elements) {
+                RecordComponent id = element.getClass().getRecordComponents()[0];
+                assertThat(id.getAccessor().invoke(element)).as(name + " " + id.getName()).isNotNull();
+            }
+            return;
+        }
+        for (RecordComponent component : parsed.getClass().getRecordComponents()) {
+            assertThat(component.getAccessor().invoke(parsed)).as(name + " " + component.getName()).isNotNull();
+        }
+    }
+
+    @Test
+    void everyRecordedAnswer_ParsesIntoItsResponseType() throws IOException, ReflectiveOperationException {
+        List<Path> files;
+        try (Stream<Path> listed = Files.list(FILES)) {
+            files = listed.sorted().toList();
+        }
+        assertThat(files).isNotEmpty();
+
+        for (Path file : files) {
+            String name = file.getFileName().toString();
+            Class<?> type = TYPES.entrySet().stream()
+                    .filter(entry -> name.startsWith(entry.getKey()))
+                    .map(Map.Entry::getValue)
+                    .findFirst()
+                    .orElseThrow(() -> new AssertionError("No response type for " + name));
+            assertFilled(name, jsonMapper.readValue(file.toFile(), type));
+        }
+    }
+}
diff --git a/src/test/java/core_service/modules/igdb_adapter/service/IgdbApiServiceTest.java b/src/test/java/core_service/modules/igdb_adapter/service/IgdbApiServiceTest.java
index 5f88adc..57fa15e 100644
--- a/src/test/java/core_service/modules/igdb_adapter/service/IgdbApiServiceTest.java
+++ b/src/test/java/core_service/modules/igdb_adapter/service/IgdbApiServiceTest.java
@@ -127,6 +127,38 @@ class IgdbApiServiceTest extends AbstractUnitTest {
         assertThat(tags.get(620L).themes()).contains("Horror");
     }
 
+    @Test
+    void getTimeToBeat_AnswersForAppsAndGamesNotAskedFor_AreLeftOut() {
+        expectToken();
+        igdb.expect(requestTo(containsString("/external_games")))
+                .andRespond(withSuccess("[{\"game\": 72, \"uid\": \"620\"}, {\"game\": 73, \"uid\": \"999\"}]",
+                        MediaType.APPLICATION_JSON));
+        igdb.expect(requestTo(containsString("/game_time_to_beats")))
+                .andRespond(withSuccess("[{\"game_id\": 72, \"normally\": 3600}, {\"game_id\": 73, \"normally\": 7200}]",
+                        MediaType.APPLICATION_JSON));
+        igdb.expect(requestTo(containsString("/game_time_to_beats")))
+                .andRespond(withSuccess("[{\"game_id\": 1025, \"normally\": 3600}, {\"game_id\": 1026, \"normally\": 7200}]",
+                        MediaType.APPLICATION_JSON));
+
+        assertThat(service.getTimeToBeat(List.of(620L)).orElseThrow()).containsOnlyKeys(620L);
+        assertThat(service.getTimeToBeatByGameIds(List.of(1025L)).orElseThrow()).containsOnlyKeys(1025L);
+    }
+
+    @Test
+    void getGameTagsAndYears_AnswerWithAGameNotAskedFor_KeepTheAskedGames() {
+        expectToken();
+        for (int call = 0; call < 2; call++) {
+            igdb.expect(requestTo(containsString("/external_games")))
+                    .andRespond(withSuccess("[{\"game\": 72, \"uid\": \"620\"}]", MediaType.APPLICATION_JSON));
+            igdb.expect(requestTo(containsString("/games")))
+                    .andRespond(withSuccess("[{\"id\": 72, \"first_release_date\": 1149120000, \"themes\": [{\"name\": \"Horror\"}]},"
+                            + " {\"id\": 999, \"first_release_date\": 1493942400}]", MediaType.APPLICATION_JSON));
+        }
+
+        assertThat(service.getGameTags(List.of(620L)).orElseThrow().get(620L).themes()).contains("Horror");
+        assertThat(service.getReleaseYears(List.of(620L))).contains(Map.of(620L, Set.of(2006)));
+    }
+
     @Test
     void getReleaseYears_SteamAppLinkedToTwoIgdbGames_GetsBothYears() {
         expectToken();