Doom
Walls on map:
Press LS, RS(2), A, Left(2), Up, A, C at the auto-map screen during
game play. Do not pause the game. A sound will confirm correct code
entry. All walls will be displayed on the map.
Full map:
Press LS, RS(2), Right, Up, B(2), Left, RS at the auto-map screen
during game play. Do not pause the game. A sound will confirm correct
code entry. All items will be displayed on the map.
Invincibility:
Press Up, Right, A, B, A, Down, A, LS(2) at the auto-map screen
during game play. Do not pause the game. A sound will confirm correct
code entry.
Weapons and ammo:
Press A, Left, A, B, A, Right, A, C, A at the auto-map screen during
game play. Do not pause the game. A sound will confirm correct code
entry. All weapons and 500 rounds of ammunition will be available.
Level select:
Press LS, Up, C(2), RS, Down, A, Left(2) at the auto-map screen
during game play. Do not pause the game. A sound will confirm correct
code entry. Restart the game for access to any level.
Screen size:
Press Up, Right, LS, Up, Right(2), RS, A, Left at the auto-map screen
during game play. Do not pause the game. A sound will confirm correct
code entry. The game may now be set to run in two additional larger
screen sizes, including full screen.
Saved game bug:
The 3DO Memory Manager will lock up or reset when deleting the saved
game file named "DOOM.PREFS". It will also be unable to display any
files below this file. The file may be deleted by using the built-in
memory managers of Syndicate or Wing Commander III.
