I have never thought I could get so much fun out of a game that cost less than 10 bucks! This game was an intant classic for me and I still play it a lot. Get it and you won't regret it!
Basically the objective of the game is to beat the other guys to the finnish line, and to get there quicker you will perform a combination of stunt combos (of your choosing from the many options) so that you get a speed boost on your bike/Jetski/Hoovercraft/pod. The more complex the stunt, the more speed boost it will get you, and this system will make both a racer and a stunt master out of you.
I was surprised to see how well it runs on a Win 8.1 machine, especially because it was originally made for tablets, yet the PC version is well polished and the controls are smooth. I also find the concept to be VERY atractive, the racing style is super fun, and the bikes are very awesome. As you progress through the game, you will start to make lots of money which you will use to buy more bikes and to upgrade them to beastly set ups. I find that only three bikes were actually critical to have (Lanzer, Manta, and Scorpion) but that may be a personal thing. Still you will likely get all the bikes and upgrades since there seems to be nothing else to do with your money.
For those of you that prefer console style controllers the game accepts XLinput Xbox 360 style controllers, though I wholly prefer the mouse and keyboard for this game, this of course is a personal preference.
If you are into arcade games, then you really need to give this game a try!