Akiko Game Engine
Open source hardware accelerated 2d game engine programmed in OpenGL.
ShatBrix
Tetris, programmed using SDL, in C++, compiled for Windows.
Snake
A classic Nokia-phone style snake, programmed using SDL, in C++, compiled for Windows.
Wii Solitaire
Klondike solitaire programmed for the Wii using devkitpro, in C++.