Developer open-sources SLG web game enabling Claude and other AIs to play autonomously

On November 7, 2026, a developer posted on V2EX about an open-source web-based strategy SLG game, with the source released on GitHub under the MIT license (https://github.com/athlan20/slg) and the game itself hosted at https://slg.yuntianyou.cc . The post describes logging in with Google or GitHub and clicking a “copy to AI” button that puts the server address, documentation, and API token into the clipboard. Pasting that into Claude, ChatGPT, a locally hosted model, or a custom script prompts the model to build the city, train troops, and fight battles on the player's behalf. Those using Claude Code or Cursor can connect via an MCP plugin, requiring just a few lines of configuration. The developer emphasizes that human players and AI operate through the same server protocol, with identical server-side verification, and states that no AI-specific back door exists.

The game allows offline resource production, offers new players a 3-day beginner protection period, and grants one 12-hour immunity per week. According to the developer, the AI drafts plans, comments on battle reports, and writes daily summaries when the player is away, and has been observed attacking neighboring cities unprompted. The post ends by inviting feedback through the GitHub issue tracker and asking other players how they run their own AI setups. The materials provided cover only the initial announcement, so no information is available on subsequent changes or the current status of the project beyond what the original post states.