Open 3D Engine (O3DE) is an Apache 2.0-licensed multi-platform 3D
User-friendly AI Interface
Godot is a powerful cross-platform game engine
Open QR Code is an open-source, cross-platform app
Transport-based cross-browser bi-directional communication layer
Unicorn CPU emulator framework (ARM, AArch64, M68K, Mips, Sparc
Fast and lightweight JavaScript game engine built on WebGL and glTF
Multi-platform 2D and 3D game engine
3D engine with modern graphics
Cross-Platform C++ 2D/3D game engine
Cocos simplifies game creation and distribution with Cocos Creator
Multi-platform Engine for Desktop, XBOX (UWP) and Mobile games
Open Source Routing Machine - C++ backend
A grid based movement engine compatible with Phaser3
Cross-platform 2D and 3D game engine with modular architecture
The flexible game engine
An open source, general-purpose policy engine
A game engine with an emphasis on real-time cutting-edge solutions
Xash3D FWGS engine
An OpenGL RTS game engine written in C
The Semantic Engine for Model Context Protocol(MCP)
An open source flight dynamics & control software library
V1, Mirror Classic. V2, Mirror Engine: Join Discord for access
LM Studio Apple MLX engine
Zig game engine & graphics toolkit