I figured i'd post this as it might be of interest to some people.
Nexon (The Maple story people) recently released a new game into open beta called Kart rider. As of this moment content is very much lacking with only 4 racing tracks and very limited character customization but it's still fun.
The game plays more or less like Mario kart, you race around the track to be first place while hindering your opponents with items picked up on the track. it's incredibly addictive and well worth checking out of you like that sort of thing, it can be found at this address http://kart.nexon.net