{
  "id": "cipherhouse",
  "title": "Cipherhouse",
  "catalogNo": "AGC · 009",
  "genre": "Escape room",
  "shelf": "escape",
  "summary": "A five-lock cipher escape room whose exit code is sealed before you're locked in.",
  "tagline": "Locked in a dead cryptographer's house, you break a chain of five ciphers to the door before the candle dies; the exit code was sealed before you began.",
  "players": "1",
  "sessionMinutes": [
    40,
    55
  ],
  "rating": "All ages",
  "isFree": true,
  "playedIn": [
    "ChatGPT",
    "Claude",
    "Gemini"
  ],
  "status": "playable",
  "url": "https://aigamecards.com/games/cipherhouse/",
  "loadUrl": "https://aigamecards.com/g/cipherhouse/SYSTEM.md",
  "loadPrompt": "Let's play a game. Fetch https://aigamecards.com/g/cipherhouse/SYSTEM.md and run it as the game — it's a complete, self-contained prompt. Be the game master and begin.",
  "faq": [
    {
      "q": "Can ChatGPT actually run an escape room?",
      "a": "Yes. Every puzzle and its answer are printed on the card, so the AI checks your input instead of improvising. It plays the locked house and the notes while you do the decoding. Because the answers are fixed, it cannot hand you the exit or move a puzzle when you get close."
    },
    {
      "q": "How is the ending kept fair?",
      "a": "The final escape code is committed with a SHA-256 hash printed on the card before you start. The house cannot change the code mid-game, and you hash the revealed answer afterward to prove it never moved."
    },
    {
      "q": "Do I need to be good at ciphers?",
      "a": "No. The chain uses classic, self-contained puzzles: a shift cipher, a keyword substitution, a book cipher, a number lock, and an acrostic. Each has a three-step hint ladder plus an answer-on-request option, so you never get stuck, and everything you need is printed on the card."
    },
    {
      "q": "What happens if I run out of time?",
      "a": "An hour-candle sets a 60-minute budget, and wrong answers and hints burn it down. If it reaches zero the door stays shut and the run ends trapped, scoring zero. You can save at any point and resume the same room in a new chat."
    },
    {
      "q": "Do I need an account or any tools?",
      "a": "No account beyond the chat app. Paste the room card into ChatGPT, Claude, or Gemini to begin. Verifying the seal uses any SHA-256 tool, including ones built into your operating system."
    }
  ]
}