Desktop/Android/HTML5/iOS Java game development framework
Solar2D Game Engine main repository (ex Corona SDK)
Open source voxel game engine with support for survival and crafting
Godot is a powerful cross-platform game engine
Java/JavaFX/Kotlin Game Library (Engine)
Open source HTML5 game framework that offers WebGL and Canvas
The game engine for everyone
Voxel game-creation platform with easy modding and game creation
A tool to select chunks from Minecraft worlds for deletion or export
An open-source sandbox tower defense game
Open-source Android/Desktop remake of Civ V
RetroArch is a frontend for emulators, game engines and media players.
A certain block game
Open source cross-platform multi-purpose game toolkit
Satisfying monster shooter
A cross-platform PSP emulator
A complete 3-D game development suite written in Java
Multi-platform Engine for Desktop, XBOX (UWP) and Mobile games
A Minecraft Launcher which is multi-functional, cross-platform
One framework for creating powerful cross-platform games
Xash3D FWGS engine
Multi-platform 2D and 3D game engine
Sandbox video game with a powerful physics engine
The source code to VVVVVV
A Bukkit(1.19/1.20) server implementation in modding environment