MAP03: Toxin Refinery (Console Doom)

MAP03: Toxin Refinery is the third level of most console versions of Doom, based on the original E1M3: Toxin Refinery with modifications made to accommodate consoles' limitations. The author of the conversion is American McGee, and the original authors of the map are Tom Hall and John Romero. The map first appeared in Atari Jaguar version, and is additionally used in the 3DO, Sega 32X, Game Boy Advance, Sony PlayStation, and Sega Saturn versions.

This level contains a secret exit leading to MAP24: Military Base. The Sony PlayStation and Sega Saturn ports will lead to MAP56: Military Base instead, which is same conversion having another map slot.

Essentials
Blue Key

Normal exit

Secret exit

Secrets

 * 1) (sector 57)
 * 2) (sector 76)
 * 3) (sector 101)
 * 4) (sector 106)
 * 5) (sector 116)
 * 6) (sector 143)

Comparison of versions
Numerous changes were made to this level compared to the PC version.

Geometry simplification

 * Several staircases have fewer steps, similar to other levels in PSX Doom.
 * A brightly-lit sector in front of the door leading out of the starting room was removed.
 * A sector on the north-western wall of the dark room containing the yellow keycard was removed.
 * The north-western room containing the rocket launcher has fewer sides, and the two columns are shaped like pentagons rather than octagons.
 * The nukage pit on the north side of the level has fewer sides, as does the walkway running through it.
 * The brightly-lit sectors either side of the staircase leading to the normal exit are removed.

Room design

 * All tall techno pillars and floor lamps are removed from the level.
 * The nukage-filled passage leading off the north-western room is wider to accommodate the player's increased radius.
 * The large hole in the walkway over the nukage pit on the north side of the level was removed. The nukage around the walkway is much shallower, making it possible to escape if the player falls in.
 * The room behind secret #5 (the unmarked door in the room behind the blue door) is now an outdoor sector. The height of this room has been reduced.
 * The room behind the yellow door was redesigned. The windows are narrower and do not have grates, and the monsters seen outside the room are on a raised ledge instead of being on the ground.

Texture changes

 * Switches throughout the level use an on/off switch on silver wall texture.
 * Wall textures are replaced throughout the level, with the effect of reducing the number of different textures used.
 * The grates around the nukage pit at the start of the level are replaced with translucent windows.

Monster placement

 * The shotgun guys visible through the windows of the room behind the yellow door on Ultra-Violence are replaced with imps.
 * On the PC version of the level, no monsters guard the room behind the yellow door on easy and medium skill levels. On console versions, six imps are visible outside the room on Ultra-Violence, four on Hurt Me Plenty, and two on I am a wimp/Not Too Rough.
 * Chaingunners are added to the level on Ultra-Violence in the following locations:
 * One in the north-western room containing the rocket launcher.
 * One in the corridor in the center of the level, leading to the northern nukage pit.
 * One in the open room before the hallway leading to the secret exit.

Music
The map uses the following music tracks:

Player spawns
This level contains nine spawn points:
 * 1) facing south-east. (thing 266)
 * 2) facing north. (thing 267)
 * 3) facing east. (thing 268)
 * 4) facing north. (thing 269)
 * 5) facing west. (thing 270)
 * 6) facing north. (thing 271)
 * 7) facing east. (thing 272)
 * 8) facing north. (thing 273)
 * 9) facing north. (thing 274)

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