[1] After the copy protection screen and when it says to press fire, type "PANTHER" for a simple demo from the developers. You will need to restart the game in order exit the demo.
[2] Distributed in Germany by Ariolasoft.
PC versions: CGA, EGA
Poster [Source: Atari Mania]
After you type in the copy protection and it says to press fire, type “SPAM” instead. The game will start, and you’ll have infinite lives and you won’t need any of the keys.