Time Patrol is a clone of the arcade hit Time Pilot. In it, you fly around destroying enemy ships based on the time period you are currently in, and then destroy a 'master ship' to escape the current time period, and jettison into a tougher one in the future. You start in World War I, versus biplanes which are easy to destroy, and progress from there.
Title: Time Patrol
Author: M.G. Lustig
Publisher: Computerware
Released: 1983
Requires: Color Computer 1,2,3, 32K RAM, cassette or disk, joystick.