PartyKit Overview PartyKit is a platform for building real-time, multiplayer, and collaborative applications. Each "party" is an isolated room running on Cloudflare's edge network — close to users for low latency. Unlike Socket.IO (which needs a persistent server), PartyKit runs serverless with automatic hibernation — you pay for active connections, not idle servers. Use it for collaborative editing, live cursors, multiplayer games, real-time polls, and any feature where multiple clients need synchronized state. Instructions Step 1: Setup Step 2: Define a Party Server Step 3: Client Connectio…