how can i play def jam fight for ny on my xbox 360?
To be able to play an Xbox game on an Xbox 360, the Xbox 360 must be backwards compatible with that game. At this time, "Def Jam Fight for New York" is not forwards compatible with the Xbox 360.
The Xbox 360 may become backwards compatible with "Def Jam Fight for NY" in the future but it is very unlikely to happen, if at all, any time soon. I have included a list of compatible Xbox games in the sources section.
Sorry!