There are only two menu screen codes for Abe's Oddysee: One, very useful, the other, not so useful. Only the not-so-useful one is available to players by "legal means", i.e., not employing a code, however. They are the Level Select and the FMV Select.
The Level Select
Hold down the SHIFT key. While holding SHIFT, press: DOWN ARROW KEY, RIGHT ARROW KEY, LEFT ARROW KEY, RIGHT ARROW KEY, LEFT ARROW KEY, RIGHT ARROW KEY, LEFT ARROW KEY, UP ARROW KEY. You will be taken to an option screen with all the levels in Abe's Oddysee.
The FMV Select
Hold down the SHIFT key. While holding the SHIFT key, press: UP ARROW KEY, LEFT ARROW KEY, RIGHT ARROW KEY, LEFT ARROW KEY, RIGHT ARROW KEY, LEFT ARROW KEY, RIGHT ARROW KEY, DOWN ARROW KEY. You will be taken to an option screen with all the movies in Abe's Oddysee.