MAP11: Refinery (Console Doom)

MAP11: Refinery is the eleventh level for console versions of Doom, based on the original E2M3: Refinery with modifications made to adapt consoles' limitations. The original authors of the map are Tom Hall and Sandy Petersen. The map first appeared in Atari Jaguar version, and was later used in the 3DO, Sega 32X, Game Boy Advance, Sony PlayStation, and Sega Saturn versions.

Essentials
Blue key

Path to the exit

PlayStation

 * The staircase passage with plasmarifle, which connects the blue keycard room and metal room next to the marble hall, has its ceiling higher than the sky of the lava room. This causes the scenes in the staircase and the blue key room to render above and over the sky texture (this does not normally occur in the PC version and the console versions other than PlayStation and Saturn, which use polygon rendering technique).

Comparison of versions
Compared to the PC version the following changes have been made:

Jaguar and derived
The "cacodemon cage" seen at the start of the level has one large window, instead of four small windows. In addition, this window lacks the middle cage texture and is no longer flagged as impassable and has block monster flag, letting the players freely walk inside and blocking cacodemon movement out.

All the thin walls in both nukage-filled areas have been removed or severely simplified.

Sega 32X
The version on Sega 32X seems to be an earliest developed variant of the level coming before the Atari Jaguar which has some changes over this level:

The thin walls in the two nukage halls are still exist:
 * The first hall (which connects the first outside room and the shotgun circular pedestal) remained mostly intact except the outer walls being simplified.
 * The second hall have eight above fourteen thin wall patches. The patches in that hall are built so to accompany the players with the path through to the exit room and there are only one opening for each entrance instead of two.

Music
The map uses the following music tracks: