independant study using opengl

Well I am doing an independant study using OpenGL. By December I am supposed to have a completed project, which in my case will be a game. I was thinking of doing a 3d version of Spacewar. Does this sound like a good idea? Or is there something better that you guys can think of?

Spacewars was the first computer game so I would like to take it and make it 3d and add some other things as well. To clear other things up I would like to say that I do know C++ and have already started learning OpenGL using OpenGL Game Programming and the NeHe tutorials.

Make whatever you want. Just make sure that you are not getting in over your head. Pick a simple idea that you can get done in the allotted time. I am not familiar with the game you mentioned, but it sounds like a good idea.