UCI chess engine
Open-source Android/Desktop remake of Civ V
Xash3D FWGS engine
Desktop/Android/HTML5/iOS Java game development framework
The game engine for everyone
Voxel game-creation platform with easy modding and game creation
The source code to VVVVVV
scene-oriented, flexible 3D engine (C++, Python, C#, Java)
Pokedex demonstrates modern Android development with Hilt
Portable UCI- and XBoard-compatible chess engines.
GemRB is a portable open-source implementation of the Infinity Engine
Domination is a game that is a bit like the board game Risk
GLScene Engine for Delphi & C++Builder VCL Windows 32/64
Android, UIQ 3.0, Series 60 Edition 5 open-source software
Free Texas Holdem Poker game using HTML5, CSS and JavaScript
Platform independent browser based Str8ts solver
Platform independent browser based Sudoku solver
quiz game with spin wheel
Some humble web applications
A promising chess program
Orx: Portable Game Engine
A Endless running game set in desert filled with obstacles
PyMancala: A Python API for the Mancala game
Qt-based Minesweeper with different backgrounds (and music for PC)