When you finally pass the WHOLE game like me u get a new start screen i will not discribe it ill just says that it has all the mario kart racers including the unlockable R.O.B and well thats pretty much it. Oh and the end credits change as well when it says THANKS FOR PLAYING it shows all the racers as well well any ways now that i have all the mario kart character and there karts and the option of picking any kart for one racer like for example, Mario in Dry Bomber or Peach in B Dasher, or Bowser in plugstyerchest 4000. it feels good that i finnally passed the whole game i got it on christmas and I beat it today on January 1 ,2006.