I completed an OpenGL game engine and accompanying game called "Earthcraft" a few months ago with the help of 2 classmates. It's a Tactical RPG, where "geomancers" have the ability to manipulate the terrain to their armies' advantage.
This game and it's engine was written from scratch using only c++ and Glut. I co-authored the game engine, wrote all camera transformations, designed and implemented the realtime non-linear terrain manipulation. I also created some of the modeling and textures. Teammates were James White and Devin Fisher.
It can be downloaded at http://www.et.byu.edu/~pic3/Earthcraft.zip PLEASE NOTE IT REQUIRES A GAMEPAD/JOYSTICK.
Read the "readme" file for instructions.