Rebuilding a viral Hacker News game with Kilo CLI + Opus 4.7

A developer rebuilt a viral Hacker News multiplayer cursor game (Cursor Camp) using Kilo CLI with Claude Opus 4.7 in about 2 minutes for ~$3. The build used Cloudflare Workers and Durable Objects for real-time cursor state. Key takeaway: when using AI coding agents for complex apps, the bottleneck is choosing the right tech stack, not implementation. Answering the agent's questions upfront and asking 'which stack lets you build this fastest?' leads to better, cheaper results.