The flexible game engine
Godot is a powerful cross-platform game engine
Solar2D Game Engine main repository (ex Corona SDK)
An OpenGL RTS game engine written in C
Fast and lightweight JavaScript game engine built on WebGL and glTF
Multi-platform 2D and 3D game engine
Educational game development environment designed to teach programming
Cross-platform 2D and 3D game engine with modular architecture
A game engine powered by python and panda3d
Flax Engine, multi-platform 3D game engine
Cocos simplifies game creation and distribution with Cocos Creator
Multi-platform Engine for Desktop, XBOX (UWP) and Mobile games
A game engine with an emphasis on real-time cutting-edge solutions
A retro game engine for Python
The Ren'Py Visual Novel Engine
Xash3D FWGS engine
GemRB is a portable open-source implementation of the Infinity Engine
Firmware for the Nintendo Switch
Zig game engine & graphics toolkit
Powerful, mature open-source cross-platform game engine for Python
Open source clone of the Age of Empires II engine
Point Claude at any game. Skills, tools and the fal MCP
Game engine supporting many 3D/2D formats and graphic effects
A complete 3-D game development suite written in Java
Open source voxel game engine with support for survival and crafting