the author of this app says:
Target Device : iphone 3GS , iphone4. ipod touch 3rd , ipod touch 4th.
IOS 4.1 or latter.
Excavator operating Simulation.
Identical Control pattern of the real Excavating Machine.
Practice mode : No Fuel game point Charge, but 1 game point for each Successful delivery.
Game mode : 3 game points Fuel cost Charge , and 3-7points for each Successful delivery.
What's New in version 1.71
Game level added.
- Requires iOS 3.2 or later