A cross-platform PSP emulator
Desktop/Android/HTML5/iOS Java game development framework
Open source simulation game based on Transport Tycoon Deluxe
The source code to VVVVVV
Open Source MMORPG Framework
Open 3D Engine (O3DE) is an Apache 2.0-licensed multi-platform 3D
One framework for creating powerful cross-platform games
Svelto ECS C# Entity Component System
An Open Source DOS emulator to run old DOS games
An award-winning drawing program for children of all ages
FlightGear Flight Simulator: free open-source multiplatform flight sim
RTS game with the theme of Strategy by Design
A strategy game with a high fantasy theme
An Ubuntu remix for both new and experienced Linux sophisticates
Chess Database and Toolkit program
A modern, cross-platform Quake game engine based on FitzQuake.
C64/Amiga emulator with PAL shader and runAhead
Chess Database and PGN viewer
Good-looking and addictive OpenSource games
A standalone UQM mod made to enhance gameplay and visuals