Hello all. Just got a xbox 360...lovely, but tried to see if it played Ninja Gaiden and Half Life 2 xbox games, and they did not work!! It worked with Halo and Halo 2. I read somewhere that these games would be backward compatible with the new 360. Can someone please let me know if I have a dodgy xbox 360 or if these games are not meant to be compatible. Please advise. Ta.