MAP91, Noxious Factory Zone, is the second Match level in Sonic Robo Blast 2v2.0. It takes place in a THZ-themed factory and its surrounding outside area. The main focus of the map lies on the large pools of damaging slime both inside and outside the factory, and conveyor belts which modify the players' movement. The map first appeared in v1.09, where it was entirely indoors. It was removed in v1.09.4. For v2.0, parts of the original map were combined with a new outdoor area to form the current version of the map.
A – Conveyor belt room: This room is located in the upper left portion of the map. It consists of a square pool of slime in which a square conveyor belt floor is inserted. The conveyor belt is split up into different parts which push the player into different directions and possibly into the slime. On each side of the room is an exit. The southern exit leads to the outside area through a tunnel, the eastern exit leads up a staircase into the Grenade ring room. The other two exits lead to the upper portion of the room, which is a gallery-like rim surrounding the slime pool. On this rim, an exit leads to a small cave which in turn is connected to the outside room.
B – Grenade ring room: This room is located in the upper right portion of the map and is connected to the outside area through a gauntlet with glass walls. It contains a slime pool in the middle and several walkways around it. The uppermost point holds the Grenade Ring panel. To the left, a staircase leads down to the conveyor belt room, while the laser gauntlet can be accessed to the south.
C – Laser gauntlet: This is a small gauntlet inside the factory that contains a conveyor belt and several lasers and crushers. Glass windows make it possible to view this room from the outside. It leads to a platform containing the SRM, which when stood upon descends into the staircase connecting the conveyor belt room with the Grenade ring room.
D – Outside room: This room makes up the largest part of the stage and occupies the whole southern area. It is set up in a U-like shape, with factory entrances both the the northwest and northeast. The northwest portion contains a fairly flat stretch of grass and is connected to the conveyor belt room both through a tunnel and a cave to the left. In the southern part, a large slime river is located which divides the room in a left and right half. The eastern part contains another factory entrance, leading to the Grenade ring room. From there, a small river descends into the larger river in several small waterfalls. A natural bridge connects the upper part of this room with a ledge in the southern part.
Points of interest
Weapon rings
The Bounce Ring Panel can be found in the west part of the outside section, on top of the entrance to the conveyor belt room.
The Rail Ring Panel is located on a high ledge across the slime lake, which can be reached via the natural bridge.
The Automatic Ring Panel can be found in the middle of the left half in the outside room.
The Explosion Ring Panel is located in a small opening in the upper ring of the conveyor belt room.
The Scatter Ring Panel can be found on an elevated plateau in the outside section, just in front of the entrance to the Grenade ring room.
The Grenade Ring Panel, hence the name, is found in the Grenade ring room, and can be accessed by jumping up the platforms.
Monitors
The SRM is located at the end of the laser gauntlet which can be accessed via the Grenade ring room. The base item of the SRM is an Elemental Shield.
The middlemost of the five monitors in the center of the conveyor belt room is a WRM.
In the corner of the glass corridor that connects the outside area to the Grenade ring room, a WRM can be found.
In the south-most part of the outside section, beyond the lake and below the natural bridge, there is a small platform on whose edge a WRM is located.
Tails/Knuckles areas
Sonic can access all of these areas, aside from the SRM shortcut. The Grenade Ring in the conveyor belt room can be obtained with monitor bouncing, all other areas require a Whirlwind Shield.
In the conveyor belt room (A) is a tiny platform with a Grenade Ring pickup on it, and two floating lines of rings.
In the eastmost corner of the outside area (D), to the right of the glass wall entrance, there is a small hole in the factory wall. This hole leads to a high ledge in the Grenade Ring room (B) which can also be accessed by flying/climbing in the Grenade Ring room. This ledge contains two Super Ring Monitors, a Super Sneakers Monitor and a Bounce and an Automatic Ring pickup. There are also three floating groups of rings, containing a Rail, Scatter and an Explosion Ring pickup.
On the factory wall in the western part of the stage, just to the right of the two slime tubes, there is an air shaft that leads into a very small room, containing rings and an Explosion Ring pickup. Tails can fly through the ceiling to get to another air shaft that leads to the end of the laser gauntlet (C), where the SRM is located. Knuckles can only access this shaft from the SRM side however.
In the southmost part of the outside area, close to the Rail Ring Panel, there's a high ledge with two ring monitors and a Rail Ring pickup. A rather large group of rings with an Explosion Ring pickup in the middle floats right next to this ledge. This area can only be reached as Sonic by spindash-jumping from the opening in the wall, the one that leads to the high ledge in the Grenade Ring room. While still in midair, the Whirlwind jump must be used.
