Code Royale
Race friends to solve the same coding problem against one shared clock
Code Royale is a multiplayer coding race for friends. One player creates a room and shares the code, the host picks easy, medium, hard or mixed problems, and everyone gets the same challenge and the same clock. You write your solution in an editor with autocomplete and can run it against the examples as often as you like.
Free · No login · Browser · Intermediate
About Code Royale
Each player submits once against hidden tests, and whatever is in the editor is submitted when time runs out. The player who passes the most tests wins, with the fastest submission breaking ties. Afterwards everyone can read each other's code. It supports Python, JavaScript, TypeScript, Go, Java, C, C++ and Rust.
It is free, runs in the browser and needs no sign-up, only a display name. The project is open source under MIT and can be self-hosted with Docker Compose. The maker built it as an alternative to CodinGame's Clash of Code.
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