Native Android app for Habitica
Solar2D Game Engine main repository (ex Corona SDK)
Godot is a powerful cross-platform game engine
Open source voxel game engine with support for survival and crafting
An open-source sandbox tower defense game
Open source HTML5 game framework that offers WebGL and Canvas
The game engine for everyone
Continuation of NetherSX2 based on AetherSX2 4248
Desktop/Android/HTML5/iOS Java game development framework
Open source cross-platform multi-purpose game toolkit
Android real-time display control software
RetroArch is a frontend for emulators, game engines and media players.
Voxel game-creation platform with easy modding and game creation
A certain block game
A cross-platform PSP emulator
Satisfying monster shooter
Sandbox video game with a powerful physics engine
Multi-platform Engine for Desktop, XBOX (UWP) and Mobile games
One framework for creating powerful cross-platform games
The source code to VVVVVV
Free, cross-platform 2D game engine powered by Haxe and OpenFL
Java/JavaFX/Kotlin Game Library (Engine)
Open-source Android/Desktop remake of Civ V
A dead simple 2D game engine for Go
Xash3D FWGS engine