{"id":46820048,"title":"Show HN: I Built a Multiplayer Game in 4 Days Without Writing Code","points":1,"user":"fcavalcantirj","time":1769741909,"time_ago":"5 hours ago","type":"link","content":"

I ran Claude Code in a loop for 4 days. It built a multiplayer strategy game autonomously. I only touched the code at the end for polish (~5%).

How it worked:

1. Asked Claude to interview me about the game design\n2. From that conversation, it generated ~248 structured tasks as JSON\n3. Created a simple loop: Claude picks a task, implements, tests, commits, repeats\n4. Throttled to 3 tasks, 15min pause, to not kill my API quota\nThe script:\nclaude --permission-mode acceptEdits "@specs/prd-v1.json \\\n1. Read PRD. Pick highest-priority task. \\\n2. Implement. Run tests. \\\n3. Update progress. Commit. Push. \\\nONLY ONE TASK AT A TIME."\nResult: https://jarls-production.up.railway.app\nCode: https://github.com/fcavalcantirj/jarls\nThe loop concept: https://www.anthropic.com/engineering/effective-harnesses-fo...

Not perfect — had bugs, ugly screens. But 95% was autonomous.

The bottleneck isn't coding anymore. It's thinking clearly upfront.","url":"item?id=46820048","comments":[{"id":46820091,"level":0,"user":"Computer0","time":1769742445,"time_ago":"4 hours ago","content":"

I won and it crashed, I think the AI can only win by accident.","comments":[{"id":46820866,"level":1,"user":"fcavalcantirj","time":1769750962,"time_ago":"2 hours ago","content":"

pick a good model, hard. AI wont win by accident","comments":[]},{"id":46820861,"level":1,"user":"fcavalcantirj","time":1769750923,"time_ago":"2 hours ago","content":"

bug, I'll check. thanks.","comments":[]}]}],"comments_count":3}