Crazy Conveyors

A platformer shooter created by Carl Thompson & Craig Thompson and released by Bytes and Bits in 1983. In it you must gather all the boxes on the level without touching the other alien. Once you have them all you will be transported to the new level. You can shoot, and have a limited amount of ammo per level, more can be gathered from the boxes. Each level gets more difficult.

An updated version was released in 1985.