Mario cart is not on a website but it is a game for ds, wii, gamecube, Nintendo 64, gameboy etc.
super mario games .com
with computers
go to a website where you can make ROM hacks or a Mario website etc and you may have to download a software (not sure) and you can make the ROM hack.(etc= other)
Super Mario World is not to be played on the Internet, to play it, get a Super NES, then the game cartridge for that particular game.
in 1975
Go to this site for a game maker that will allow you to make Mario games and all sorts. (link moved to link section)
I haven't seen anything relating to a new "Mario Kart" game. If there is something on a different website, I will post the information here.
There is no official Mario website.
Yes u can make your own website or game.
sploader
you dont