A game about climbing a mountain.
Controls: arrow keys.
August, 2011 update:
I don't know why so many people are panicking to "get" this game. Games are interesting because they're part product and part user experience, so you should be able to just play Mountain Top like any other game and then think about what your sad/wonderful/horrible experience was. I've failed at this game because any "art" should be able to be understood by anyone, and all most people get out of this is a joke ending. If this game had any "point" it would be to try to envelope you in the graphics made of very basic shapes and then bewilder you with crowded shapes as the supposed "greatest view in the world" or "the face of god."
If you got anything out of this game, it should be that you don't have to be a god damn genius to make a game or an interactive piece. You should be able to make a "sketch" of a game and feel good about the finished idea that someone can actually explore.