Chimp Jump is a very basic Symbian game in which you need to help a monkey climb to the top of the screen.
The gameplay in Chimp Jump consists of leaping upwards from platform to platform. This is made harder by the fact that you can't move left and right - only the platforms move, so your timing needs to be impeccible. The object is to see how far you can get.
Chimp Jump is actually a terrible game. Not only is it boring and repetitive, but it's frustratingly difficult and looks dated.