Mario Motocross Mania
Mario Motocross Mania is a great flash game where you race against the clock. The physics of the game make it tough to not flip over so do your best and forget the rest (awful line I know). You can buy upgrades along the way such as: Rotation, Suspension, Tyres, Speed, and Engine. You earn cash by how fast you complete each stage and the number of stars you collect.