I made this small BUT AMAZING game one year ago, when I was facing OpenGL for the first time.

This game is basically about you (Gordon Freeman) who has to conquer most of the 6 side things in the level.

I would say it is more advanced than chess because you have to be very careful when you choose which field has to be attacked next.

Actually this game has a pretty much mind blowing story, but due to the fact that this game is in the German language, and because I am too lazy to translate this massive amount of text(~25 words) you will have to imagine something yourself.