Godot is a powerful cross-platform game engine
Open source voxel game engine with support for survival and crafting
A certain block game
The game engine for everyone
An open-source sandbox tower defense game
RetroArch is a frontend for emulators, game engines and media players.
Voxel game-creation platform with easy modding and game creation
Desktop/Android/HTML5/iOS Java game development framework
Sandbox video game with a powerful physics engine
Cocos simplifies game creation and distribution with Cocos Creator
Xash3D FWGS engine
Open source HTML5 game framework that offers WebGL and Canvas
Free, cross-platform 2D game engine powered by Haxe and OpenFL
One framework for creating powerful cross-platform games
Multi-platform Engine for Desktop, XBOX (UWP) and Mobile games
A simple and easy-to-use library to enjoy videogames programming
Turn-based survival game set in a post-apocalyptic world.
Multi-platform 2D and 3D game engine
Stream switch games to your PC via USB or network
A dead simple 2D game engine for Go
A cross-platform PSP emulator
New Godot bindings for Swift
Cross-platform game engine in Rust
The source code to VVVVVV
Open-source Android/Desktop remake of Civ V