To control your car, you use the [arrow] keys to accelerate, steer, and drive in reverse. Once you hit the track, you can collect coins which are used to purchase new characters and tracks in the store, as well as power-ups, which are activated with [space]. Some power-ups leave obstacles for your opponents to dodge, others attack them directly, and there's also a power-up to give you a speed boost. If you've played any mainstream racing games in the last ten years, you're probably familiar with all of the mechanics and are ready to go.
If you've got a one-track mind, the Single Race mode is good for a quick challenge against the (surprisingly good) AI. Playing the Skidmark Cup levels takes you on a trip through several of the courses in the game (some backwards or mirrored, just for variety), while the Time Attack mode lets you race solo against the clock to submit your times online. The collected coins can be used to unlock new tracks, cup challenges, and characters, so be sure to grab them, no matter what mode you're playing.
Analysis: While we've somehow managed to dodge this topic so far, this precaution must be given: This game is loaded with poop jokes. Between some of the power-ups, the cup names, and some of the characters themselves, there's some slightly vulgar at play here, so parents might want to give this game a shot first before letting junior take a spin.
Dirtiness aside, Skid MK is a rather gorgeous racing game. The scenery in the levels really brings out the surreal and bizarre sense of humor in its creators, yet still creates a polished atmosphere that's quite nice to look at. If you're used to playing Mario Kart or other upper-echelon racing games, you'll notice that this game feels like it's very close to them in terms of quality.
That said, there's another essential similarity: It's fun! If you can get over the lewdness, it's quite easy to get caught up in the run, and you'll be trying to get every item in the store and every achievement star the game has to offer. Sure, the steering might take a bit to get used to, but that's why it's Skid MK, not Ultra-Tight Turning Radius MK. Each race is only three laps long, but you'll be wanting more.