# boardgameio/boardgame.io

State Management and Multiplayer Networking for Turn-Based Games

Repository: https://github.com/boardgameio/boardgame.io
Canonical: https://ross.abutalabs.com/products/boardgameio
Homepage: https://boardgame.io
Language: TypeScript
License: MIT
License Family: permissive
Topics: boardgames, game-engine, tabletop, react, react-native, javascript, turn-based, multiplayer
Last push: 2026-08-18T21:25:56+00:00

## Health v2 (maintenance only)
Score: 76/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 98, release rhythm 35, longevity 100
- inputs: {"age_days": 3207, "days_push": 15, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 12412, forks 833 (observed 2026-08-28T04:10:52.645541+00:00)

## What it is
boardgame.io is an open-source JavaScript/TypeScript engine for building turn-based games. Developers write simple move functions and the framework handles state management, realtime multiplayer networking, storage, AI bots, and game phases without manual networking code.

## Use cases
- build an online multiplayer board game
- create a turn-based card game with React
- add AI bots to a tabletop game prototype
- sync game state between players in realtime
- implement game phases with different turn orders
- prototype game moves before rendering a UI
- build a chess or checkers web app with matchmaking lobby

## When to choose
- you are building a turn-based game (board, card, tabletop) in JavaScript or TypeScript
- you want multiplayer networking and state sync without writing server code
- you use React or React Native and want view-layer-agnostic game logic
- you need auto-generated AI opponents or game logs with time travel

## When to avoid
- you need real-time action or physics-based gameplay rather than turn-based logic
- you are building a game outside the web/JS ecosystem
- you need a full-featured general-purpose game engine with rendering, audio, and asset pipelines

## Facets
- artifact type: framework
- maturity: stable
- function: game-engine, state-management, websocket, middleware
- domain: web-development, frontend
- platform: browser, cross-platform
- tags: board-games, turn-based, multiplayer, react, react-native, typescript, tabletop, game-ai, lobby, game-development, real-time, nodejs, web-server, mobile

## Member repositories
- boardgameio/boardgame.io (main) score 76

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:10:52.645541+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T17:14:05.655564+00:00, confidence not recorded.
  - readme: https://github.com/boardgameio/boardgame.io (fetched 2026-08-28T04:10:52.645541+00:00, sha ad262921f24b)
  - homepage: https://boardgame.io (fetched 2026-08-29T08:11:20.127328+00:00, sha 576c25037363)
  - site_page: https://boardgame.io/documentation (fetched 2026-08-29T08:11:20.130184+00:00, sha 8c8ad54066c0)
- Data as of 2026-08-30T08:39:29.467469+00:00.