MAP29: Twilight Descends (PlayStation Doom)

MAP29: Twilight Descends is a map that appears in the PlayStation and Saturn versions of Doom.

This map contains a secret exit leading to MAP57: The Marshes.

Walkthrough

 * Letters in italics refer to marked spots on the map. Sector numbers in boldface are secrets which count toward the end-of-level tally.

Trivia
This is the only time a player will come across a megasphere in an Ultimate Doom level, even if it's not part of the original canon.