below is the direct link to Microsoft official compatibility list. I wish Ralllisport Challenge 2 was, but it ain't.

http://www.xbox.com/en-US/games/backwardcompatibilitygameslist.htm

I thought you guys would like to see the PS controllers through the years. Here they are from the first to the newest.

(No analog, very light and flimsy feeling)

(Analog and rumble, first dual shock)

(Dual Shock 2, nuff said.)

(Sixaxis)

(Dual Scock 3, Same design but I just had to use a different picture... :) )

And there you have it. All the revisions that went to market.

-oG-ShAdY

who cares about rumble. when are they going to update the 12 year old controller that squeaks and flexes when you move your hands around, or in opposite directions. feels so cheap. L2, R2 buttons are terrible. You cant even play a racing game for more than 20 minutes without your fingers going numb. Just copy the 360 controller and get it over with. PS3 is the best system though.