Initiated in March 1991 and released in September 1991. [Source: The One, issue 33, June 1991, pp40-41]
 Distributed in Germany by United Software.
Last known version: v1.32
Based on 1990 Jaleco coin-op.
Pause the game and press the ‘HELP’ key five times. Now unpause the game (a tiny heart should appear on the status screen). This will give you infinite lives.