Hate to see duplicated work. Quetoo was already release quite a while ago, although there is probably lots of room for improvement.

https://garage.maemo.org/projects/maemo-quetoo/

You might want to contact him and see if he has any patches to improve the speed or functionality, or maybe you could do a joint version? I would love to see Quake 1/2 really running well on the N800. It would really highlight the power of this small, unassuming device. It is really too bad that Nokia hasn't done any work to support the 3d acceleration features built into the processor.

I would especially love to see bluetooth mouse support so that games like this could be played properly and for better interaction with remote systems.