Trackmania (soon for the wii!)
Recently, i have been totally obsessed with this game. Its called Trackmania nations forever and its for the pc.
TrackMania - Downloads
there is a full-fledged free version, and a mega version. the mega version is united, but you have to pay for it.
anyways, it is like a mega racing stunt game and i have introduced it to jonb95 and zero (although zeros pc is too slow for it :D). the specs are really low and its great for online racing.
this here video explains it
its only 503mb and you can really ramp up the graphics and get great gaming out of it.
i even think that, in a way, its better than mariokart. if i can get enough people to try this and get into it like i did, we can have a tourney for this game.
i have some great tracks that id like to share with you guys and the best of you can join a clan with me.
if anyone installs it, post your opinion in this thread, with your email that you used to sign up for the game.
i will also download the wii version when it comes out and review it for all of you.
have fun :D