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micraft

A free RPG game — play it in your browser, no install. Multiplayer RPG voxel game. MiCraft is a multiplayer RPG voxel game built with Kotlin Multiplatform. It runs a Ktor WebSocket server with authoritative physics and serves a browser client via Kotlin/Wasm + BabylonJS. Procedural terrain generation, a biome system, liquid physics, NPC entities…

by @micoli · micoli/micraft on GitHubLANG KotlinHOSTED ON MICOLI.GITHUB.IOUPDATED 10 Oct 2026

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From the README

MiCraft is a multiplayer RPG voxel game built with Kotlin Multiplatform. It runs a Ktor WebSocket server with authoritative physics and serves a browser client via Kotlin/Wasm + BabylonJS. Procedural terrain generation, a biome system, liquid physics, NPC entities, weather zones, an RPG layer, and a plugin-based slash command system.

Full documentation — how to play and how to configure every system — ****.

Locally: make docs-site-serve → .

Full machine-readable spec: server/openapi/openapi.yaml, browsable at /api/docs (Redoc) when the server is running.

Read the full README on GitHub →

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