Equim-chan/Mortal

Health v2 · maintenance only

Flags: no_releases

Adoption not part of the score

1527 stars · 218 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

Mortal is a free and open-source AI for Japanese (riichi) mahjong powered by deep reinforcement learning, written in Rust with a Python interface. It includes a fast mahjong emulator (libriichi), an mjai-compatible interface, and serves as the backend for mjai-reviewer.

Use cases

• build a riichi mahjong AI bot
• review my Tenhou mahjong games
• simulate mahjong games at high speed for RL training
• train a deep reinforcement learning agent for mahjong
• analyze mahjong discards and decisions
• integrate an mjai-compatible mahjong engine

When to choose

• you need a strong, open-source riichi mahjong AI
• you want a fast Rust-based mahjong emulator for self-play training
• you want mjai-compatible tooling or a review backend

When to avoid

• you need other mahjong variants like Chinese or American mahjong
• you need pre-trained model weights without reading the author's release policy
• you need a plug-and-play GUI client rather than a library/backend

Facets

library · maturity active

machine-learning reinforcement-learning game-engine simulation sdk artificial-intelligence reinforcement-learning gaming-tools rust python cross-platform riichi-mahjong mahjong-ai mjai game-ai deep-reinforcement-learning tenhou libriichi game-development gpu

Member repositories

For agents

markdown · JSON · MCP: product_card(name="Equim-chan/Mortal")