Skip introductory sequence: Type PP during the monitor adjustment screen that displays a skull, then Right Click at the title screen to skip the introductory sequence.
Advance in game: At the skull load-in screen, type the following case-sensitive text, with spaces as noted: "Roberto Dan R Zaphod B [Space]"
After you type "Roberto", Stauf will say, " Duh.... that's not it Karl!". Ignore him as he is trying to trick you. After the "B", type [Space], then any of the following letters to get to that point in the game:
a: End of disc one. s: End of disc two. d: End of disc three. f: End of disc four. e: The "Olive In Stein" riddle, good for using the Kellyn code. g: The very end, at the "Let's Make A Real Deal" intermission sequence. Hidden video: To see a hidden video, go to the television In Dutton's room at a point where you can see the close-up view. Type "Kellyn". Mocking cheaters: In The 7th Guest, typing "Zaphod Beeblebrox" gave you open house access. Doing this in The 11th Hour will only cause Stuaf to mock you.
Ending bonus: Complete the game to unlock the "Open House" file. Load it to be able to play any puzzle an unlimited number of times.
Treasure hunt item list: Collect the following items in the listed order at the corresponding locations: