Given the great new graphics processor in the n900, there's really a great opportunity to create a lot of nice-looking games for it. Bounce Evolution is a great example of this potential. Right now, we don't have any really excellent OpenGL 2.0 engines ported to Maemo 5. This makes it much more difficult to write a 3D game, since you would need to use openGL to implement your own graphics engine.

I would suggest we port an existing 3D engine to Maemo with support for openGL ES 2.0. There are a number of existing engines for linux that may or may not have support for ES 2.0.

Candidates include:
OGRE
Irrilicht
Horde3D

Let's get started figuring out how this community can get a 3D engine on the n900 by exploring our options for 3D engines!