Underworld is being released on PS3, Wii, Xbox 360, PC, PSP, Nintendo DS AND (dun dun dun!) PS2.
HOWEVER, the graphics for PS2 will be slightly lower quality then PS3, for the obivious reasons, like PS3 is the New Gen and this game is made for Blu-Ray format. The same also goes, unfortunatly, for PC users (unless you have, like, Windows Vista 5000* or some other brand spanking new Windows program)
But do not dispare! It has been said the PS2 and PC users will be able to enjoy the game just as well as everyone else, just the graphics will be a teeny bit poorer.
IMO, as long as I don't have to go forking out the $950AU it is to buy a PS3 for the one game I really like playing, then who really GIVES if the graphics will be a slightly lower quality?
* *sigh*, yes I DO know there is no such thing as Vista 5000, I was being sarcastic.