I would pay for a proper port of gemrb(open source Infinity Engine clone) for n900
Now it has too many bugs and you can't complete most of the games :/
no game is really worth $100 especially when I live in the uk so will therefore have to pay £100
It will be rather hard to market a game and make momey for the n900 as we already have a large selection of games thanks to the great emu's out there, the best bet would be to make an mmorpg for the n900, pc any other pocket devices that doesn't need awesome controls as we only have a small keyboard, it could be made free for a month and then subscription or something... That way you could make your £100.
Having a game like eve online but but easier to play on the n900 would defo make some money as would a world of warcraft.
final fantasy series (1 through however high they can put in this device, which probably would be FF IX).
Id pay for those. Well... I allready have all these games for consoles, and emulators provide games I through VI, but the last three games, thr psx ones, would be great to have in ze pocket.
Well GTA 3 would be possible, the ps2 had only 300mhz cpu (unsure of the archetechture) and 150mhz gpu, so it rockstar really wanted to they could recode for n900, as they did with psp.