Writing · Jun 14, 2026
$0/month realtime infrastructure on Cloudflare Durable Objects
A browser multiplayer shooter where one small server keeps the score and calls every hit, running at $0/month on Cloudflare's free tier. The trick is a Durable Object: one named, long-lived instance per room that Cloudflare places at the edge and bills nothing while it sleeps. Fourth in a $0 series after OpenClaw, Holtwick, and the wrist meter.