MAP57: The Marshes (PlayStation Doom)

MAP57: The Marshes is a secret map that appears in the PlayStation and Saturn versions of Doom, which can be accessed from MAP29: Twilight Descends.

It was designed by Randy Estrella.

Walkthrough

 * Though this is a large, spread-out level containing a number of areas to explore, the main mission in this stage is to kill a Cyberdemon; doing so will unlock the exit.

Official
Thereisn't official secret in this level (the player will have 100% secret simply exiting after have killed the Cyberdemon).

Non-official
1. In the area with the rocket launcher and 6 rocket boxes there are 4 openings ; one of which has a small bridge leading to a small area containing a megasphere and a computer map.

2. In the megasphere area there is a skull on the wall. Flip it, walk through and you will be teleported to a small cave containing a BFG 9000. Can also be reached by walking on the border containing 8 rockets.

Bugs
There are no known bugs in this level.

Trivia
This is the only time in any port of Ultimate Doom level that one will find a Super Shotgun.

This stage marks the first time a crushing ceiling is used in PlayStation/Saturn Doom.

Thereis a trap in this level : if player uses teleport which faces the entry area, he's teleported on "re" area (which can also be reached by jumping from the Soul Sphere platform) and cannot escape. Player have to choice between death (by activating switch and stay under the near crushing cell) or retry (by pause menu).