Godot is a powerful cross-platform game engine
Multi-platform Engine for Desktop, XBOX (UWP) and Mobile games
Multi-platform 2D and 3D game engine
Cocos simplifies game creation and distribution with Cocos Creator
Xash3D FWGS engine
UCI chess engine
Open source voxel game engine with support for survival and crafting
scene-oriented, flexible 3D engine (C++, Python, C#, Java)
The game engine for everyone
Voxel game-creation platform with easy modding and game creation
Godot Kotlin JVM Module
A dead simple 2D game engine for Go
New Godot bindings for Swift
Sandbox video game with a powerful physics engine
3D Engine c++
An iOS & tvOS Frontend for Multiple Emulators
Home theater software and entertainment hub for digital media
Free, cross-platform 2D game engine powered by Haxe and OpenFL
GemRB is a portable open-source implementation of the Infinity Engine
Cross-platform game engine in Rust
Game engine to build text adventures.
Orx: Portable Game Engine
Portable UCI- and XBoard-compatible chess engines.
GLScene Engine for Delphi & C++Builder VCL Windows 32/64