Claude Code ran for 19 hours 53 minutes without stopping

A developer gave Claude Code a spec and rules, and the agent ran continuously for 19 hours 53 minutes, producing a playable multiplayer game called Agege Life. In 4 days it reached 211 commits, ~169k lines of code and 186 test files.

• The agent ran non-stop for 19 hours 53 minutes on a single task
• Result: 211 commits, ~169k lines of code, 186 test files
• Progress was tracked in a BUILD_PROGRESS.md file with a task list
• Three features (sickness, account deletion, admin panel) were skipped because they were not on the list