well to do it i would say you should go as fast as you can and get as many mushrooms as you can. I know it can be kinda hard
Mario Kart did not come before Mario World. Mario World and Mario Kart were for the SNES. Mario World came out 1991 and Mario Kart was released in 1992, a year after.
Finish the retro cup that comes before the Lightning cup in the Grand Prix.
You cannot turn before the race has started you just turn after "3" appears on your screen.
Mario kart
Nothing.
You do an amount of races or you can finish cc's.
Rgr GMT
You need to finish in a 1st, 2nd or 3rd place.
No I doubt Nintendo will release a sequel of Mario Kart Wii.
you get a picture of the mii on your license with Mario and peach that is sent to your wii message board
you have to play and finish in the top 5 for points
Finish both intial retro cups if i recall