I thought it was good. Everything was very clean and well done. The music got a bit repetitive, maybe adding new songs to each level and a completely different song for the title screen would help. Sound effects were ok. The reason I am giving this game two stars is because there was no challenge, or skill involved with this game. You can pretty much just use the up key and the back key and win the whole game. This game requires grind and skill means nothing. Sure, it's cool to watch a semi crash into things and jump around, but that only goes so far.