EDIT:My device is running Quake 3 at an average 25 Fps so I thought that it does not uses GL, but this is not true. Those who made the N900 port did a very good job. Sorry for any inconvenience caused by this topic.

I have done some research on the internet and I have found some dissapointing informations. There is a handheld computer called Openpandora and it has a really the same hardware as the N900 and it is capable of running Quake 3 with nanoGl

I was searching on some forums but the links are down since all the information I found was posted in 2008 or 2009.
http://talk.maemo.org/showthread.php?t=29085
http://code.google.com/p/gl-wes-v2/
http://forum.openhandhelds.org/viewtopic.php?f=14&t=884

I can not believe that no efforts were made to make Quake 3 or other OpenGL applications work on N900.

I would like as many people as possible to give some news on this topic because I can not find any useful information.

P.S.: I am currently woking on to make some desktop Linux distros work on the N900 (Debian, Kubuntu, Ubuntu). I can imagine to use these distros to play games instead of Maemo because we do not have any restrictions.