Godot is a powerful cross-platform game engine
Open source voxel game engine with support for survival and crafting
Voxel game-creation platform with easy modding and game creation
Xash3D FWGS engine
The game engine for everyone
Free, cross-platform 2D game engine powered by Haxe and OpenFL
Multi-platform Engine for Desktop, XBOX (UWP) and Mobile games
Cross-platform game engine in Rust
A dead simple 2D game engine for Go
New Godot bindings for Swift
Cocos simplifies game creation and distribution with Cocos Creator
Open source library for creative expression on the web, desktop, etc.
Multi-platform 2D and 3D game engine
scene-oriented, flexible 3D engine (C++, Python, C#, Java)
GemRB is a portable open-source implementation of the Infinity Engine
A Complete WebGPU Game Engine for Browser & Desktop Arcade Oriented
Orx: Data-Driven Game Engine
Cross-platform 2D game engine (+ full OpenGL, +full OpenGL ES )
Motor de juegos de aventura programable
Urho3D Game engine
Open source reimplementation of GTA San Andreas game engine in Unity
2D Game Engine
Cross-platform 2D and 3D game engine
Android OpenGL Game Engine
Real-time RPG for PC/tablet/phone; multiple quests and random dungeons