MAP21: Mt. Erebus (Console Doom)

MAP21: Mt. Erebus is the twenty-first level of console versions of Doom, based on the original E3M6: Mt. Erebus with modifications made to adapt to the consoles' limitations. It was converted by American McGee and originally designed by Sandy Petersen. The map first appeared in Atari Jaguar version, and is additionally used in the 3DO, Game Boy Advance, Sony PlayStation, and Sega Saturn versions.

Secrets

 * 1) (sector 67)
 * 2) (sector 104)

PlayStation only

 * One of the walls in the marble building is displayed distorted due to a wrong Y-offset setting (linedef 341).
 * (On UV skill level only) In the brick building of the separate east part of the map, a demon and a spectre are stuck due to a wrong thing arrangement (things 73 and 74).

Comparison of versions
Numerous changes exist in the level as compared to its PC version:

Geometry simplification

 * Lorem ipsum

New design
Some rooms in the level were redesigned:
 * Lorem ipsum

Other

 * Lorem ipsum

PlayStation
Some additional changes were made in the PlayStation port:
 * Lorem ipsum

Music
The map uses the following music tracks:

Player spawns
This level contains six spawn points:
 * 1) facing north-west. (thing 215)
 * 2) facing north-east. (thing 216)
 * 3) facing south. (thing 217)
 * 4) facing south. (thing 218)
 * 5) facing south-west. (thing 219)
 * 6) facing south-east. (thing 226)

Things
This level contains the following numbers of things per skill level: