How JackiOh uses AI

How JackiOh uses AI: its computer opponents, what was made with AI, and what AI does with your data.

The computer opponents

JackiOh has three kinds of computer opponent. Each plays by the same rules you do and sees only what a player in its seat could see.

  • In Practice, at the difficulty you pick, and in the tutorial, an opponent that runs in your browser.
  • In ranked, when no one near your rating is free after a short wait, an AI opponent that our server plays. Nothing in the game marks it; the Terms say when it comes, what it looks like and how it plays.
  • In co-op, the team you and a friend play against.

They choose their moves by searching the moves the rules allow, with a game-playing program we wrote and tune on games it plays against itself. They are not chatbots, and they say nothing to you but the emotes a player can send.

Made with AI

  • The music, every track and the few bars each Legendary and Mythic card plays, was composed by an AI model, Anthropic’s Claude, written as code and played with free instrument sounds. No melody or recording was taken from another work. Where each track came from.
  • The cards’ spoken lines are read by computer text-to-speech voices, not recorded by actors.
  • Card art is drawn by code from each card’s name, type and tags, not by an image-generation model.
  • JackiOh’s code is written with the help of AI coding assistants.

What AI does with your data

We don’t send anything you write, or your account’s details, to an AI service. Records of online games are used as the Privacy Policy says: for the card statistics, to time the ranked AI opponents’ moves and habits like a person’s, and to choose the decks they bring from decks players have taken into ranked.