On the map screen, type any of the following:
"EVAS"----------------Save game at any time
"UNCLE ROGER"---Message from the programmer
"FORMAT"--Erase all previously saved games
During play, type "NIGHTMARE" and press 'F10' to access the cheat menu. Lots of options to choose from.
If you choose to play Finnius, you must pause the game and press 'ESC' to restart the level.