1) There's no real indication of how you unlock things, seems pretty random.
2) The money dropping is useless. I'd rather have it calculated based on the score received.
Hate how whenever you hit something it either: A) Flings you off in some stupid direction at a higher velocity than you were moving in the first place B) Sticks you to it.
 "Goin Up"){kind=icon}
 "Band Of Heroes"){kind=icon}
 "Armed with Wings 3"){kind=icon}
 "Road of the Dead"){kind=icon}
 "Siegius Arena"){kind=icon}
 "Into Space 2"){kind=icon}
 "Monster Saga"){kind=icon}
 "JumpingLine"){kind=icon}
 "Elephant Quest"){kind=icon}
 "Diamond Penthouse Escape"){kind=icon}
 "Earn to Die"){kind=icon}
 "MARDEK RPG: Chapter 3"){kind=icon}