The 7th Guest/Cheats

Unlock all rooms
When you first start the game, type Zaphod Beeblebrox in the menu screen. You will hear a voice say "groovy" if it was done correctly. on one of the four corners of the Ouija board, and a picture list of all the rooms will be displayed.
 * Systems: DOS, Mac, Windows

Set starting room
Start a new game and save it with the filename "Badger", then move the cursor to one of the corners of the Ouija board, and press a button.
 * Systems: CD-i