About
About AI Game Cards
Updated
AI Game Cards is a library of original games you play inside the AI assistant you already use. Free, no signup, nothing to download.
What it is
Each game is a card: a compact rulebook your assistant runs as game master. One tap opens ChatGPT or Claude with the game ready to send. Most games can also be pasted whole into a chat that can't open links, and Claude can install any of them as a Skill. There are 39 games on 15 shelves: D&D-style RPGs, murder mysteries, social deduction games, chess puzzles & trainers, creepy horror games, duels, escape rooms, word games, text adventures, survival games, logic puzzles, trivia & quiz games, riddles & lateral thinking puzzles, guessing games & 20 questions, and strategy & simulation games. The card carries everything the AI needs to run the game the same way every time.
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. A loose prompt gives the assistant nothing firm to hold, so it drifts: your wounds heal themselves, your inventory changes, the murderer turns out to be whoever the story needs.
The cards hold what a loose prompt leaves to chance. The game's state is reprinted every turn, so nothing is forgotten. Dice come from a code tool or a list published before play, so the narrator never picks a roll. Where a game keeps an answer from you, the answer is locked before you play, so the culprit can't be chosen at the finish. The methodology page explains how each of those works.
Who makes it
AI Game Cards is built by Christoph, an independent developer in Cologne: one person, no studio, no funding. The games are designed and written with AI under his direction, then reviewed and tested by machine before they ship; how they're made has the details. There's no account to create and nothing to buy.
Curious how the games hold together turn after turn? Read the methodology. Otherwise, pick something off the shelf.
Other sites by the same maker
Christoph also runs a few free sites outside games:
- aidevhub.io: decodes JWTs, cron lines, curl commands and .env files in your browser.
- aifinhub.io: compares market-data, LLM and broker API prices, each linked to the vendor's page.
- aifithub.io: strength standards: see your level on every lift and what the next level takes.
- aibizhub.io: a runway calculator: the month your cash runs out or you break even.
- frontierpicks.com: free AI-written research notes on US stocks.