Mario Kart DS/Wi-Fi

Nintendo Wi-Fi Connection on Mario Kart DS supports up to four simultaneous players in a game. Karts and characters you've unlocked via the single player mode are selectable on an online match.

Stars
As an incentive for players whom have done well in the single player mode, a maximum of three stars will appear next to your name before and during an online match once they have completed the majority of the single player missions and races with at least one star. If all completed missions are ranked three stars, three stars will appear next to your name. However, if you rank two stars on one race or objective, you will be ranked one star even if all the other races and objectives are ranked three stars. Likewise, ranking any lower than an A on any objective or race will cause no stars whatsoever to appear next to your name. You can change the number of stars next to your name by going back to repeat a race or objective and achieve a higher rank on it.

Starting a game
Selecting regional or worldwide on the Nintendo WFC screen matches with random opponents according to their location, where choosing regional will look for the closest opponents geometrically and choosing worldwide will try to match you up with any opponents that can be found. Selecting rivals