Godot is a powerful cross-platform game engine
Cocos simplifies game creation and distribution with Cocos Creator
Multi-platform 2D and 3D game engine
Multi-platform Engine for Desktop, XBOX (UWP) and Mobile games
Xash3D FWGS engine
Game engine to build text adventures.
Open source voxel game engine with support for survival and crafting
GemRB is a portable open-source implementation of the Infinity Engine
The game engine for everyone
Voxel game-creation platform with easy modding and game creation
New Godot bindings for Swift
A dead simple 2D game engine for Go
Godot Kotlin JVM Module
Sandbox video game with a powerful physics engine
scene-oriented, flexible 3D engine (C++, Python, C#, Java)
Free, cross-platform 2D game engine powered by Haxe and OpenFL
Cross-platform game engine in Rust
Orx: Portable Game Engine
GLScene Engine for Delphi & C++Builder VCL Windows 32/64
A Complete WebGPU Game Engine for Browser & Desktop Arcade Oriented
computer opponent for the board game Blokus
GameServer is a sophisticated, game server designed for online games
Cross-platform 2D game engine (+ full OpenGL, +full OpenGL ES )
Urho3D Game engine
The AWS GameKit Plugin for Unreal