Europa Universalis 4 save game editor
3D modeler, 3D game maker, 3D demo maker
Turkish Traditional Backgammon Game
A free 3d game for PC that does not limit the player. Fight,Build,Gain
Games for tomorrow's programmers
Mech Station Beta - Tower Defense like Game
Game engine supporting many 3D/2D formats and graphic effects
A sharp, readable, vector-y version of Monocraft
Create your own tiny chess bot
Haskell game engine library for roguelike dungeon crawlers
A work-in-progress chess bot written in C#
2D top-down 1v1 MOBA with autonomous units
A cross-platform, open-source, pure C game engine for mobile game
A simulator for drones, cars and more, built on Unreal Engine
Java Settlers
Spring is a free RTS engine developed for Windows, Linux and Mac OS X.
Simple java football game
OpenGL port of the classic 6dof 3D shooter Descent
3D C++ Game Engine - yet another open source game engine
Similar as board game Secret Hitler
Modern 3D engine and IDE written using C# and C++.
Retro Games in Gym
Solve Go problems (based on GoGrinder GoGrinder.sf.net )