Gamedev GitHub Repositories (2026) · Open Source Tools

Universal Programming Language & Translator

Empowering everyone to host fast and efficient Minecraft servers

A refreshingly simple data-driven game engine built in Rust

Generate clean 2D game sprites & animation atlases — component-row pipeline: state rows, alpha cleanup, frame extraction, runtime atlases. Codex/Claude skill.

Local image or text → game-ready 3D on your own machine. Retopology, repaint, rigging and animation helpers, in a web viewer and a CLI. Runs Pixal3D, TRELLIS.2, Hunyuan3D and SF3D. Apple Silicon and NVIDIA. Every result carries its licence.

AI Skills, MCP Tools, and CLI for Unity Engine. Full AI develop and test loop. Use cli for quick setup. Efficient token usage, advanced tools. Any C# method may be turned into a tool by a single line. Works with Claude Code, Gemini, Copilot, Cursor and any other absolutely for free.

Powerful web graphics runtime built on WebGL, WebGPU, WebXR and glTF

Cross-platform, graphics API agnostic, "Bring Your Own Engine/Framework" style rendering library.

Redot Engine – Multi-platform 2D and 3D game engine

Tiny fast 2D/3D HTML5 game engine with many features and no dependencies.

A dead simple 2D game engine for Go

Godot-MCP — Model Context Protocol (MCP) integration for the Godot Engine. AI tools for the Godot Editor in C#, with cloud connection to ai-game.dev. Apache-2.0.

Stride (formerly Xenko), a free and open-source cross-platform C# game engine.

AI chat and agent tooling for Godot, with both MCP support and in-built native chat window.

Your web skills, now in Unity.

A World of Tanks-style, Vite-powered, engine-free pure Three.js armored combat simulator resolving plate-level armor, ballistics, modules, spotting, and physics, with 121 tanks and 20 destructible battlefields. Playable entirely in the browser on desktop and mobile devices. Built end-to-end by a multi-agent Claude/Codex pipeline.

egui: an easy-to-use immediate mode GUI in Rust that runs on both web and native

Your coding agent paints pixel art in the Aseprite window you already have open. MCP server + skills for Claude Code, omp, Codex, Gemini CLI and Cursor — draws, looks at its work, animates and exports. Gallery and benchmark: pixeli.pebbly.space

DeepSeek Harness plugin: control the Unity Editor through the unity CLI

high-performance rendering backend (C++, Python, C#, Java)