About AI Game Cards

What it is

Each game is a card — a compact rulebook engineered to run faithfully inside ChatGPT, Claude, or Gemini. You copy the card into the assistant, it becomes the game master, and you play. Role-playing adventures, sealed mysteries, social deduction, duels. The card carries everything the AI needs to run the game the same way every time, so the experience doesn't fall apart the moment things get interesting.

Why it exists

Ask ChatGPT to "play a game with me" and it will happily agree — then forget the rules three turns in, go soft when you're supposed to lose, and invent an ending once it runs out of ideas. The failure isn't the model. It's the lack of structure. A loose prompt gives the assistant nothing firm to hold onto, so it drifts: your wounds heal themselves, your inventory changes, the murderer turns out to be whoever the story needs it to be.

We engineer game cards that don't drift. State is reprinted every turn so nothing is forgotten. Randomness is pre-committed so a roll can't be fudged. Mystery solutions are sealed before you play so the culprit can't be conjured at the finish. The result is a game that stays a game. The methodology page explains exactly how each of those guarantees works.

Who makes it

AI Game Cards is built by Christoph, an independent developer. One person, no studio, no venture funding — which is the point. The games are small, honest, and made to work rather than to upsell. There's no account to create and nothing to buy. Naming the maker is deliberate: you should know who stands behind the games you're trusting to run fairly.

Curious how the games hold together turn after turn? Read the methodology. Want to know how they're written and playtested before release? See how they're made.