MAP31: Cyberden (The Plutonia Experiment)

MAP31: Cyberden is the first secret map of Plutonia. It can be reached from MAP15.

Overview
Cyberden is MAP31 of The Plutonia Experiment and contains four Cyberdemons. The Cyberdemons are in cages; while they can be seen by the player, they cannot see the player. Four switches located around the map must be pressed to release the Cyberdemons. Killing all of the Cyberdemons allows access to the yellow key and the exit.

Secrets

 * 1) In the green marble wall at the south end of the level, climb the stairs and make your way left along the narrow corridor in the back of the room. Flip the skull switch here to open a room back on the lower floor. There's half of a lion-face on one of the walls in the new room; open it to reveal a teleporter to a secret area.

Records
The Compet-N records for the map are: