Lots of the racers are unique as well such as a tarantula or a person driving a cop car. Like for example, there is a city track, a classroom track, and TONS of other tracks, as well as characters. Lots of these tracks and characters are crazy unique.
One thing that sets STK with other kart racing games is that there are downloadable tracks, racers, and arenas all made by players. STK is a game for Windows, Mac, Linux, Android, and I think IOS.It's a kart racing game with original characters and characters from the Linux Universe, Such as Tux, the Red Devil guy, and The GIMP mascot.
But there is one kart racing “clone” that I would argue that rivals Mario Kart 8 Deluxe. When you think of a clone, you think of a bad game that looks horrible and was made in Brazil with Windows XP Computers.