Unlimited cash. In the upgrade page click the golden skeleton (right of the money top left of the game) to add you more skeletons.
The city in a future was destroyed by a technological catastrophe. The people are isolated from the outside world. But you have a last chance to survive and get ticket to a safety zone “Paradise”. Hurry up! Because the way is dangerous. Get out of hell at all costs!!!
Up/Down = Forward/Back
Right/Left = Balance
X/Z = Turn gun Forward/Back
Space = Rocket