Games & game dev

Unity MCP acts as a bridge between AI assistants and your Unity Editor. Give your LLM tools to manage assets, control scenes, edit scripts, and automate tasks within Unity.

Open Source Clones of Popular Games

GUI application to analyze game files

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

Production-grade MCP server and AI tools for the Godot engine. A Snap to install. Totally free and fun.

Online browser-based RTS game

A multi-platform launcher for your anime games.

🎮 Open-source, cross-platform 2D/3D/multiplayer game engine designed for everyone.

Animated sprite editor & pixel art tool (Windows, macOS, Linux)

Dust3D is a cross-platform 3D modeling software that makes it easy to create low poly 3D models for video games, 3D printing, and more.

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

Real-time game translation app for Android for both language learners and casual gamers

A refreshingly simple data-driven game engine built in Rust

Native AdMob integration for Godot (Android/iOS) via Editor. Supports GDScript and C#.

Open source clone of Theme Hospital

Dear ImGui: Bloat-free Graphical User interface for C++ with minimal dependencies

Luanti (formerly Minetest) is an open source voxel game-creation platform with easy modding and game creation

A modern, cross platform IDE for .NET, built with .NET & Godot

OpenUPM - Open Source Unity Package Registry (UPM)

fheroes2 is a recreation of Heroes of Might and Magic II game engine

Official electron build of draw.io

The automation tower defense RTS

Bring the power of Bevy to your Godot projects

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

Project GLD is a game library and download manager, which supports community made Lua scripts for downloading and searching games.

Animated sprite editor & pixel art tool -- Fork of the last GPLv2 commit of Aseprite

Full Twitch Library for Godot

A multi core friendly rigid body physics and collision detection library. Written in C++. Suitable for games and VR applications. Used by Horizon Forbidden West and Death Stranding 2.

Empowering everyone to host fast and efficient Minecraft servers.

Community-built comprehensive 2D content creation appplication for graphic design, digital art, and interactive real-time motion graphics powered by a node-based procedural graphics engine

A cross-platform GUI library for Rust, inspired by Elm

The HTML5 Creation Engine: Create beautiful digital content with the fastest, most flexible 2D WebGL renderer.

Babylon.js is a powerful, beautiful, simple, and open game and rendering engine packed into a friendly JavaScript framework.

A complete and cross-platform game engine designed for flexibility, performance, and fast-iterations.

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

Cataclysm - Dark Days Ahead. A turn-based survival game set in a post-apocalyptic world.

A universal inventory system for the Godot game engine.

Filament is a real-time physically based rendering engine for Android, iOS, Windows, Linux, macOS, and WebGL2

Scalable open-source game backend server: multiplayer, matchmaking, leaderboards, chat, and social features for games.

The classic, refined DOOM source port. For Windows PC.

Desktop/Android/HTML5/iOS Java game development framework

Open-source Android/Desktop remake of Civ V

Phaser is a fun, free and fast 2D game framework for making HTML5 games for desktop and mobile web browsers, supporting Canvas and WebGL rendering.

A GPU-rendered terminal emulator with inline 3D graphics 🐀🧀

Documentation of GDevelop - the fast, open-source, no-code game engine.

Frame profiler

A multiplayer game about paranoia and chaos on a space station. Remake of the cult-classic Space Station 13.

A game engine with a fully bindless, GPU-driven renderer featuring real-time path-traced global illumination, hardware ray tracing, and a physics simulation running at 200Hz, built over 10+ years of R&D

SkiaSharp is a cross-platform 2D graphics API for .NET platforms based on Google's Skia Graphics Library. It provides a comprehensive 2D API that can be used across mobile, server and desktop models to render images.

Complete Open Source and Modular solution for MMO

Gaming meets modern C++ - a fast and reliable entity component system (ECS) and much more

Official NetHack Git Repository

The official Open-Asset-Importer-Library Repository. Loads 40+ 3D-file-formats into one unified and clean data structure.

A rules engine and game client — Rust + WASM + React

Let AI Drive Unity, from Editor to Play Mode.

Basis is an open-source social framework for VR and Desktop usage.

The extra fast, low memory footprint YAML library for C#, focued on .NET and Unity.

Tools and libraries for reading and analyzing Unity data files.

Decompilation of Castlevania: Symphony of the Night (PSX, PSP, Saturn)

A lightweight game server framework implemented with Actor Model

:a: Web framework for building virtual reality experiences.

♞ lichess.org: the forever free, adless and open source chess server ♞

Basketball GM (and other ZenGM games) are single-player sports management simulation games, made entirely in client-side JavaScript.

Autonomous text-to-game pipeline for Godot, powered by Claude Code,Codex,Opencode

AI-powered animation sprite studio — generate character sprite sheets with 8 directions and 100+ actions from a single text prompt (Wails + Go + React)

Boolean Operations for 2D Polygons: Supports intersection, union, difference, xor, and self-intersections for all polygon varieties.

Pokémon Trading Card Game Card (TCG) Database for the TCGdex API. ⭐ Leave a star if the project interest you !

《金庸群侠传》c++复刻版，已完工

Connect any MCP-compatible AI client (Claude Code, Cursor, Windsurf) to Unity or Godot. 235+ granular tools, a Unity-aware system prompt, game design document project context, script semantic search, and skill calibration.

A versatile game save backup manager, featuring Steam detection, Minecraft support, drag & drop, desktop shortcuts and emulator compatible.

A Ragnarok online server implementation from scratch, for fun

An unofficial rules-compliant browser based version of Arkham Horror: The Card Game. Not produced, endorsed, or supported by, or affiliated with Fantasy Flight Games.

A retro game engine for Python

An open source re-implementation of RollerCoaster Tycoon 2 🎢

p5.js is a client-side JS platform that empowers artists, designers, students, and anyone to learn to code and express themselves creatively on the web. It is based on the core principles of Processing. Looking for p5.js 2.0? http://beta.p5js.org

Flexible level editor

An open source, turn-based strategy game with a high fantasy theme.

Development at the speed of light

A minimal 2d/3d game framework for @ziglang.

Flax Engine – multi-platform 3D game engine

Fast and minimalist 3D viewer.

LÖVE is an awesome 2D game framework for Lua.

Voxel sandbox game with a large render distance, procedurally generated content and some cool graphical effects.

[mirror of https://gitlab.com/veloren/veloren] An open world, open source voxel RPG inspired by Dwarf Fortress and Cube World. This repository is a mirror. Please submit all PRs and issues on our GitLab page.

Space exploration, trading, and combat game.

OpenTTD is an open source simulation game based upon Transport Tycoon Deluxe

Defold is a completely free to use game engine for development of desktop, mobile and web games.

A drop-in design system for Unity 6 UI Toolkit (UIDocument + UXML + USS). Tokens, components, icons, mobile responsiveness, and a runtime helper — all themed dark, all keyboard-and-touch-ready, all editable from one stylesheet.

🚀 UE5-UMG-MCP: A deep-focused MCP for Unreal Engine UMG layout. Designed to maximize AI efficiency within limited context windows by prioritizing precision in UI structure, animations, and blueprint integration.

Open 3D Engine (O3DE) is an Apache 2.0-licensed multi-platform 3D engine that enables developers and content creators to build AAA games, cinema-quality 3D worlds, and high-fidelity simulations without any fees or commercial obligations.

Open source re-implementation of Tomb Raider I, Tomb Raider II and Tomb Raider III, along with additional enhancements and bugfixes

Repository for the Goonstation branch of SS13

A visualization grammar and GPU-accelerated toolkit for genomic data

Reliable & unreliable messages over UDP. Robust message fragmentation & reassembly. P2P networking / NAT traversal. Encryption.

RenderDoc is a stand-alone graphics debugging tool.

⚔️ A cross-platform, open source, and super fast MUD client with scripting in Lua

Unit testing and build system for C projects

A dead simple 2D game engine for Go

Godot template and component-based framework for 2D games.

An MMO game written in Erlang + PostgreSQL (+ Omnigres) + Zig (+ Raylib), powered by a Nix-based devenv