You are a pilot in charge of an alien transport vessel.
Navigate through 6 locations and 14 levels picking up your passengers and transporting them to the delivery platform.
Press Up arrow key to take off/activate boosters, then use LEFT and RIGHT to move.
You can land anywhere, but it has to be a controlled, soft landing.
Likewise, you can bump into pillars and walls at very slow speeds.
You have to pick up all of the passengers ( green guys, 1 or 2 per level ) then land on the landing platform on the right side.

