The ESRB (Entertainment Ratings Software Board) had posted, and has since pulled down, a rating for an Xbox 360 version of the up-coming NBA JAM game that is currently only being released the Wii. EA had provided no official comment on the posting.

The listing had, NBA JAM as an 'E' for Everybody rating. Description of the game from the ESRB was as follows:
This is an arcade-style basketball game in which players can select teams from the official NBA roster to compete in 2-on-2 games of basketball. Players can perform exaggerated slam dunks, shatter backboards, and try to conquer a series of unique "JAM Challenges."

Source: Rumor: NBA JAM Heading to the 360

I had NBA JAM on ps2 and it was hard!
I think on the legends mode i beat the first team then couldn't beat the next xD there was 20 in total.
Not gonna get it.