Quake3 works in the N900 and is quite spectacular. I coud write a lot but I prefer to keep the juice for the developers in-house that did this just for fun. They have a demo in the Maemo Summit, on Friday afternoon. I will let them know about this thread just in case they haven't noticed already. And indeed, the problem for a full release are the data files. If someone has a good and easy solution we are interested (including contacting the developers with something more casual and direct than a corporate email sent to the mailbox in their website. The experience is quite good, so perhaps they are indeed interested.