Stone Punk
This is one of those games where you need to launch something as far as possible. The vehicle is shot from a catapult under the angle you select with your mouse. You'll need to buy upgrades such as a rodent in wheel that will work as an engine for moving on the ground.
Instructions:
You can then move this vehicle with S-W or the up and down arrow keys. You won't go very far using the power of catapult only. Press and hold space to use one of the engines.