Excalibur 2555 A.D. Codes -

Cheat mode:
Hold [Esc] to pause game play. Then hold [F12] and enter one of the following codes. Then, release all keys and press [Space] to resume game play. A message will confirm correct code entry.

Effect	Code
Full health	[Up] three times, [Left] five times
Full sword power	[Up], [Up], [Left], [Left], [Right], [Right], [Left], [Left]
Unlock all doors1	[Up], [Up], [Right]. [Right], [Up] four times
Level skip	[Left], [Right], [Left], [Up], [Right], [Up] three times