You are a space ranger who has been captured by rebels intending to invade Earth. You are being held prisoner in a cell on the moon and must try to escape, find the rebels' plans, and return to Earth.
Notes
This was published by Bits & Bytes Ltd as a BASIC type-in listing in Bits & Bytes, vol. 3, no. 11, August 1985, p. 43.
A good game for the unexpanded Vic20. Will give you some good time.
You can download it here: http://www.vic20listings.freeolamail.com/mag_bitsbytes.html