Godot is a powerful cross-platform game engine
Open source cross-platform multi-purpose game toolkit
Sandbox video game with a powerful physics engine
Home theater software and entertainment hub for digital media
Voxel game-creation platform with easy modding and game creation
Multi-platform 2D and 3D game engine
Open-source Android/Desktop remake of Civ V
One framework for creating powerful cross-platform games
Multi-platform Engine for Desktop, XBOX (UWP) and Mobile games
Open source library for creative expression on the web, desktop, etc.
Download modified versions of Android apps and games
Board game Mondrago for Android platform.
Community-maintained compatibility reference and documentation.