Claude Code built a full browser idle mech game in 6 days
Claude Code was used over 6 days to build a mech and idle game. The game is called Big Mech Energy Idle, and it lets players fight a machine uprising, collect parts, connect those parts into a visible power graph, and move through 12 larger mechs. Claude Code handled much of the heavy work: a TypeScript simulation core, procedural PixiJS art, and a full wiki and site.
Every mech and enemy was generated with code, not s. The hardest part was the “MechMaxxing” board, a power graph where each wire shows its own math on screen. That makes the build system visible instead of hiding the numbers in a .
Most files that needed direct human editing were markdown files, while Opus also helped as a thinking partner when creative decisions got stuck.
Key points
- Claude Code was used for 6 days to build a browser mech and idle game.
- The game includes 12 playable mechs, boss fights, mini-games, pets, and a full wiki.
- The core game logic uses a TypeScript simulation.
- The art was made procedurally with PixiJS and code, not s.
- Most of the files edited directly by the maker were markdown files.