UCI chess engine
Play chess from your terminal
Godot is a powerful cross-platform game engine
Multi-platform Engine for Desktop, XBOX (UWP) and Mobile games
Xash3D FWGS engine
Multi-platform 2D and 3D game engine
Cocos simplifies game creation and distribution with Cocos Creator
Solar2D Game Engine main repository (ex Corona SDK)
Open source voxel game engine with support for survival and crafting
Chess training program playing gambits
A promising chess program
Satisfying monster shooter
Voxel game-creation platform with easy modding and game creation
The game engine for everyone
scene-oriented, flexible 3D engine (C++, Python, C#, Java)
A dead simple 2D game engine for Go
Open-source engine for Heroes of Might and Magic III
Sandbox video game with a powerful physics engine
New Godot bindings for Swift
3D Engine c++
ChessMD is a Qt-based chess game viewer with engine analysis
A completely free, open-source, 2D game engine
Home theater software and entertainment hub for digital media
Java/JavaFX/Kotlin Game Library (Engine)
KorGE Game Engine. Multiplatform Kotlin Game Engine & Korlibs