Show HN: Code Royale, an open-source multiplayer coding game

Category: devtools

Tags: multiplayer, coding-game, real-time, websockets, redis, lsp, monaco-editor

Score: 6.0/10 (Innovation: 5, Technical: 7, Documentation: 7, Utility: 5)

Code Royale is a multiplayer coding game where players compete in real-time to solve the same programming challenge within a time limit, with hidden test cases determining the winner. It supports eight languages, integrates Monaco editor with LSP-based autocomplete, and uses a self-hosted Piston runner for code execution. The project is technically ambitious, combining WebSockets, Redis state management, and a Go-based LSP service.

Target audience: backend developers, competitive programmers, coding enthusiasts

Repository: https://coderoyale.app/ · TypeScript · MIT · 1 stars

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