Build your own game engine.
When the engine changes its license terms, you'd better own the engine.
Stop renting: Unity
The ranking rule
Repositories matching this query, sorted by stars:
topic:game-engine stars:>200 pushed:>2025-10-29 archived:falseSynced nightly; star history kept so momentum is measured, not guessed.
30 projects
live from source · api.github.com · Oct 29, 2:40 AM UTCgodot
Godot Engine – Multi-platform 2D and 3D game engine
imgui
Dear ImGui: Bloat-free Graphical User interface for C++ with minimal dependencies
bevy
A refreshingly simple data-driven game engine built in Rust
raylib
A simple and easy-to-use library to enjoy videogames programming
GDevelop
🎮 Open-source, cross-platform 2D/3D/multiplayer game engine designed for everyone.
Babylon.js
Babylon.js is a powerful, beautiful, simple, and open game and rendering engine packed into a friendly JavaScript framework.
libgdx
Desktop/Android/HTML5/iOS Java game development framework
pyxel
A retro game engine for Python
aframe
:a: Web framework for building virtual reality experiences.
OpenRA
Open Source real-time strategy game engine for early Westwood games such as Command & Conquer: Red Alert written in C# using SDL and OpenGL. Runs on Windows, Linux, *BSD and Mac OS X.
magictools
:video_game: :pencil: A list of Game Development resources to make magic happen.
engine
Powerful web graphics runtime built on WebGL, WebGPU, WebXR and glTF
MonoGame
One framework for creating powerful cross-platform games.
openage
Clone of the Age of Empires II engine 🚀
luanti
Luanti (formerly Minetest) is an open source voxel game-creation platform with easy modding and game creation
ebiten
A dead simple 2D game engine for Go
entt
Gaming meets modern C++ - a fast and reliable entity component system (ECS) and much more
boardgame.io
State Management and Multiplayer Networking for Turn-Based Games
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.
flame
A Flutter based game engine.
ET
Unity3D Client And C# Server Framework
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.
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.
Fyrox
3D and 2D game engine written in Rust
flecs
A fast entity component system (ECS) for C & C++
stride
Stride (formerly Xenko), a free and open-source cross-platform C# game engine.
WickedEngine
3D engine with modern graphics
GameDev-Resources
:video_game: :game_die: A wonderful list of Game Development resources.
FlaxEngine
Flax Engine – multi-platform 3D game engine
renpy
The Ren'Py Visual Novel Engine