6. Hill Climb Racing
Players must attempt to drive as far as possible while collecting as many coins as possible in Hill Climb Racing. The difficult part of the game is having to maintain an equilibrium between gasoline depletion, speed, and prevention of a car accident. With more coins collected, players can upgrade their cars to have better traction, fuel capabilities, etc. Players can also buy upgrades or purchase vehicles that serve specific purposes. Some vehicles are better suited to some levels but not others. Some levels within the game include the desert, the moon, icy planes, mars, and many more.