The flexible game engine
Godot is a powerful cross-platform game engine
Solar2D Game Engine main repository (ex Corona SDK)
Game engine to build text adventures.
Fast and lightweight JavaScript game engine built on WebGL and glTF
Cross-platform 2D and 3D game engine with modular architecture
Flax Engine, multi-platform 3D game engine
An unofficial rules engine for the world's greatest card game
Cocos simplifies game creation and distribution with Cocos Creator
The Echo Engine is a simple game engine for text adventure games
Cross-Platform C++ 2D/3D game engine
Multi-platform 2D and 3D game engine
Amazing Adventure-Cheat Engine
V1, Mirror Classic. V2, Mirror Engine: Join Discord for access
Multi-platform Engine for Desktop, XBOX (UWP) and Mobile games
JavaScript-based game engine designed to empower developers
A game engine with an emphasis on real-time cutting-edge solutions
An OpenGL RTS game engine written in C
Xash3D FWGS engine
Zig game engine & graphics toolkit
Simple and light-weight 3D game engine
A complete 3-D game development suite written in Java
Open source voxel game engine with support for survival and crafting
Game engine supporting many 3D/2D formats and graphic effects
Unreal Engine Archives Explorer