A chess game written is turbo pascal
the open source browser strategy game
A truly extensible cross-platform game engine
A 2D Elite-style game written in Python 3.2.
Open source, moddable game engine for the "Polygon Love 2" game
Source code for the Krabat adventure
Open-source RPG for Linux similar to the NES game Final Fantasy
realistic truck simulator with 3D graphics done from zero
A simple Java-based Sudoku program.
Fast and easy-to-use pathfinding library for grid-based games
Javascript adventure game engine
Programming Game, A Practice Tool for Building Intelligent Things
Open Source Virtual World and MMOG Development Platform
Encode/decode the "Plush Code"
Learning to Code 2 Gether!
A 2D Side Scrolling Platformer Game
Open Source