Best Open Source game development Libraries

A curated list of the most popular GitHub repositories tagged with game development. Select any project to visualize its architecture and dive into the codebase using RepoMind's AI engine.

#1godotengine/godot

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

106,918C++

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#2ocornut/imgui

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

71,476C++

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#3bevyengine/bevy

A refreshingly simple data-driven game engine built in Rust

44,714Rust

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#4phaserjs/phaser

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.

39,054JavaScript

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#5raysan5/raylib

A simple and easy-to-use library to enjoy videogames programming

31,078C

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#6emilk/egui

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

28,172Rust

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#7BabylonJS/Babylon.js

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

25,116TypeScript

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#8libgdx/libgdx

Desktop/Android/HTML5/iOS Java game development framework

24,813Java

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#9leereilly/games

Archived — A list of games, add-ons, maps, etc. hosted on GitHub. Any genre. Any platform. Any engine.

24,536

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#104ian/GDevelop

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

20,656JavaScript

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#11lettier/3d-game-shaders-for-beginners

🎮 A step-by-step guide to implementing SSAO, depth of field, lighting, normal mapping, and more for your 3D game.

19,407C++

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#12clockworklabs/SpacetimeDB

Development at the speed of light

19,201Rust

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#13cocos2d/cocos2d-x

Cocos2d-x is a suite of open-source, cross-platform, game-development tools utilized by millions of developers across the globe. Its core has evolved to serve as the foundation for Cocos Creator 1.x & 2.x.

18,942C++

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#14aframevr/aframe

:a: Web framework for building virtual reality experiences.

17,475JavaScript

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#15playcanvas/engine

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

14,465JavaScript

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#16bulletphysics/bullet3

Bullet Physics SDK: real-time collision detection and multi-physics simulation for VR, games, visual effects, robotics, machine learning etc.

14,243C++

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#17SFTtech/openage

Clone of the Age of Empires II engine 🚀

14,100Python

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#18MonoGame/MonoGame

One framework for creating powerful cross-platform games.

13,182C#

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#19hajimehoshi/ebiten

A dead simple 2D game engine for Go

12,970Go

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#20assimp/assimp

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

12,735C++

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#21mapeditor/tiled

Flexible level editor

12,353C++

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#22skypjack/entt

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

12,299C++

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#23QianMo/Game-Programmer-Study-Notes

:anchor: 我的游戏程序员生涯的读书笔记合辑。你可以把它看作一个加强版的Blog。涉及图形学、实时渲染、编程实践、GPU编程、设计模式、软件工程等内容。Keep Reading , Keep Writing , Keep Coding.

9,859

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#24jrouwe/JoltPhysics

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.

9,685C++

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#25cocos/cocos-engine

Cocos simplifies game creation and distribution with Cocos Creator, a free, open-source, cross-platform game engine. Empowering millions of developers to create high-performance, engaging 2D/3D games and instant web entertainment.

9,416C++

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#26godotengine/awesome-godot

A curated list of free/libre plugins, scripts and add-ons for Godot

9,405

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#27ValveSoftware/GameNetworkingSockets

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

9,216C++

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#28Orama-Interactive/Pixelorama

Unleash your creativity with Pixelorama, a powerful and accessible open-source pixel art multitool. Whether you want to create sprites, tiles, animations, or just express yourself in the language of pixel art, this software will realize your pixel-perfect dreams with a vast toolbox of features. Available on Windows, Linux, macOS and the Web!

9,165GDScript

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#29o3de/o3de

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.

8,957C++

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#30FyroxEngine/Fyrox

3D and 2D game engine written in Rust

8,884Rust

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#31jynew/jynew

JinYongLegend-like RPG Game Framework with full Modding support and 10+ hours playable samples of game.

8,814C#

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#32tobspr-games/shapez.io

shapez is an open source base building game on Steam inspired by factorio!

6,820JavaScript

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#33googleforgames/agones

Dedicated Game Server Hosting and Scaling for Multiplayer Games on Kubernetes

6,701Go

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#34EllanJiang/GameFramework

This is literally a game framework, based on Unity game engine. It encapsulates commonly used game modules during development, and, to a large degree, standardises the process, enhances the development speed and ensures the product quality.

6,658C#

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#35FlaxEngine/FlaxEngine

Flax Engine – multi-platform 3D game engine

6,627C#

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#36BoomingTech/Piccolo

Piccolo (formerly Pilot) – mini game engine for games104

6,550C++

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