Algodoo

As the name Implies, this is a garbage truck. It`s mostly a rough draft (as you can tell, it isn`t pretty.) but anyway, see how it works.

Left and Right Keys = move truck
Up + Down = Move the arm
Left and Right Shift = Open/Close back door.

It`s pretty self explanatory. Load the circles into the back and bring them to the dump. Then open the back door to release them.

Constructive Criticism would help.