Minsoo Lee, a 24-year game designer and former lead on Ragnarok Online, published a free field manual on GitHub about integrating Claude Code into game production workflows. The book covers practical applications from systems design to live ops, emphasizing validation gates to prevent AI hallucinations, schema-first data design, and cost management, with real examples from shipping an MMORPG in Korea.
RWK is a text-based fantasy MMORPG that has been active since 2001, allowing players to create characters from various races and engage in player-versus-player combat, kingdom management, and trading within a persistent online world.