The 'Rev A' designation on this Super Nintendo version of NBA Jam (Europe) likely indicates a revised version of the game, possibly containing bug fixes or minor updates compared to the initial European release. The core gameplay—the fast-paced, two-on-two action and the signature exaggerated moves—would remain the same, but this revision likely addresses issues found in the original release.  Regional differences in box art, language, and possibly player rosters are also likely to be present.

NBA Jam (Europe) (Rev A)

NBA Jam - Tournament Edition (USA)