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
The game engine for everyone
GemRB is a portable open-source implementation of the Infinity Engine
A dead simple 2D game engine for Go
New Godot bindings for Swift
A Minecraft Java Edition Launcher for Android and iOS
An open-source sandbox tower defense game
Open source voxel game engine with support for survival and crafting
A certain block game
Free, cross-platform 2D game engine powered by Haxe and OpenFL
scene-oriented, flexible 3D engine (C++, Python, C#, Java)
Open source HTML5 game framework that offers WebGL and Canvas
RetroArch is a frontend for emulators, game engines and media players.
Orx: Portable Game Engine
UCI chess engine
Cross-platform game engine in Rust
Desktop/Android/HTML5/iOS Java game development framework
Voxel game-creation platform with easy modding and game creation
One framework for creating powerful cross-platform games
A habit tracker app which treats your goals like a Role Playing Game
A simple and easy-to-use library to enjoy videogames programming