GM Version Library is a Chinese online community and resource hub focused on the Legend of Mir private-server ecosystem. Its website combines a discussion forum with a regularly updated catalog of server files, tools, tutorials, scripts, and game assets. The catalog features a wide range of versions, including single-player and multiplayer setups, retro-style and customized editions, and releases built for different game engines. Listings provide titles and basic metadata, while the site promotes downloads for both free resources and commercial versions.

Alongside its resource library, GM Version Library publishes practical articles about configuring, hosting, and launching private servers, including guidance on server requirements, setup processes, and related costs. It also has sections covering server-launch services and complaints about providers, presenting itself as a place to seek information and discuss trustworthiness. Users can browse popular resources, search forum posts, and register for an account to participate. The site is primarily intended for game-server operators, developers, and enthusiasts looking for Legend of Mir server materials and technical know-how.