The flexible game engine
Solar2D Game Engine main repository (ex Corona SDK)
Godot is a powerful cross-platform game engine
An OpenGL RTS game engine written in C
Fast and lightweight JavaScript game engine built on WebGL and glTF
Cross-platform 2D and 3D game engine with modular architecture
Animation engine for explanatory math videos
Cross-Platform C++ 2D/3D game engine
Multi-platform 2D and 3D game engine
Cocos simplifies game creation and distribution with Cocos Creator
A game engine powered by python and panda3d
Multi-platform Engine for Desktop, XBOX (UWP) and Mobile games
V1, Mirror Classic. V2, Mirror Engine: Join Discord for access
JavaScript-based game engine designed to empower developers
A game engine with an emphasis on real-time cutting-edge solutions
Xash3D FWGS engine
The Ren'Py Visual Novel Engine
Unicorn CPU emulator framework (ARM, AArch64, M68K, Mips, Sparc
Zig game engine & graphics toolkit
Improve your Baduk skills by training with KataGo
Powerful, mature open-source cross-platform game engine for Python
A retro game engine for Python
OpenDILab Decision AI Engine
3D Engine with Blender Integration
Open source clone of the Age of Empires II engine