Local Multi-Control lets one person play Slay the Spire 2's multiplayer mode alone, controlling 2 to 12 characters on one machine and switching between them with Tab.
I took over maintenance from the original author, with their permission, and keep it working across the game's frequent beta patches.
What I built
Patch adaptation
A repeatable workflow for every game update: decompile the new build, diff it against the last one, and sweep every string-based reflection target so nothing silently breaks.
Fixes and features
Reward merging across characters, input and overlay fixes, an opt-in cross-character card reward, and minimum-version gating so players on an unsupported game build get a clear message instead of a crash.
Release management
Versioned releases through v1.33, a public issue tracker, and Workshop metadata in English and Chinese for the mod's two main audiences.
Result
Live on the Steam Workshop with 445 subscribers and 113 favorites.