There are plenty of Mario Kart clones out there. Neither can really top the original but this one does something new: transform your Karts into Boats and Jets seamlessly as you change terrains during race (which feels really as awesome as it should). The game is very polished, AI is well balanced, locations are quite memorable, controls feel just right and there are plenty of playable characters to unlock. This makes it easily one of the best Kart racers out there.

Sonic All Star Racing Transformed is the closest thing to Mario Kart on PC you'll get at this time.

There are plenty of Mario Kart clones out there. Neither can really top the original but this one does something new: transform your Karts into Boats and Jets seamlessly as you change terrains during race (which feels really as awesome as it should). The game is very polished, AI is well balanced, locations are quite memorable, controls feel just right and there are plenty of playable characters to unlock. This makes it easily one of the best Kart racers out there. Sonic All Star Racing Transformed is the closest thing to Mario Kart on PC you'll get at this time.