Claude Code Ships Complete Multiplayer Game from Half-Finished Project

A developer reports using Claude Code to complete a half-finished side project while focusing on their day job. The project was a competitive estimation game called Closer where players guess real-world statistics and duel against AI or friends.

What Claude Code Built

According to the source, Claude Code implemented the following features for the Closer game:

• Real-time multiplayer functionality using Supabase Realtime
• ELO ranking system for player matchmaking and skill tracking
• Daily challenges with percentile rankings
• Behavioral analytics dashboard
• Client-side routing
• Confidence calibration tracking

Development Approach

The developer provided Claude Code with a clear architecture and mostly reviewed and steered the implementation rather than writing code directly. The game is deployed at closer-drab.vercel.app.

The developer notes being "genuinely impressed by what Claude Code can do when you give it a clear architecture to work with." This case demonstrates how AI coding assistants can handle complex, full-stack development tasks when provided with proper direction and architectural guidance.