The pit was actually a giant hole in the center of this room. It was located in one of the rooms on the upper floor of the Nerve Gas House. The victim of this trap was Amanda Young, even though it was originally designed for Xavier Chavez. Turning it would turn off the gas supply of the oven which fueled the flames. Next to it was a drawing of a red devil pointing at the valve. In order to survive, Obi had to crawl through the flames and turn a red valve next to the door. Seconds later, the fire inside the oven would turn on and continuously come closer to Obi as the burners of the oven turned on one by one. Once Obi pulled the chain, a mechanism would close and lock the door. While one of the syringes could be easily removed, the chain with the second antidote was connected to the small door of the furnace. Inside the furnace were two of the antidotes for the nerve gas, hanging from two chains. He had to crawl into a large, metallic furnace located in the middle of the basement of the Nerve Gas House. Once it went off, the door would open without activating the trap. Besides the trap itself, a timer was attached to the door. If one of them did it nonetheless, this would trigger the revolver, which would then shoot whoever stood in front of the peephole. The prisoners inside the room were provided with a key and a message, which warned them not to open the door with the key. Additionally, the trigger of the gun was connected to a chain and a pulley, which in turn were connected to the lock of the door. Attached to it was a revolver, aimed directly at the door's peephole. It consisted of a metal contraption, which was mounted to the outside of the heavy metal door of the room. This trap was designed as a security device to prevent the prisoners of the Nerve Gas House from leaving the Antidote Safe Room. These numbers belonged to the combination to the safe and had to be entered in the order of the colors of the rainbow. Each one of the prisoners had a colored number written in the back of their necks. In the room was also a heavy safe, which contained a syringe with one of the antidotes for the nerve gas. This room, located on the ground floor of the Nerve Gas House, was the room where the seven prisoners and Amanda Young initially woke up and received their instructions. Primarily to observe the game and make sure that everyone followed the rules, Jigsaw's accomplice, Amanda Young, played as another victim. Thereby, they'd be able to obtain syringes with the antidote. In order to survive, they had to find and pass the numerous tests set up all around the house by Jigsaw. However, the prisoners would already succumb to the gas within two hours, as it caused severe internal bleedings.

After three hours, the door would be opened. The large front door leading out of the house was secured from the outside by several metal bars.

All of them were trapped inside a large abandoned residential house and were breathing in a deadly nerve gas, similar to the Sarin Gas used during the Tokyo subway attacks on March 20, 1995. The victims of this trap were Daniel Matthews, Jonas Singer, Gus Colyard, Addison Corday, Xavier Chavez, Laura Hunter and Obi Tate. Moments later, the surrounding cage would be energized, giving everyone who touched it a lethal shock. If enough pressure was exerted on the previous step, the rigged one would spring forward and break the legs of the person standing on the stairs. However, one of the wooden steps was manipulated. Originally, it was merely an ordinary staircase surrounded by a chain-link cage. This trap was designed as a security device to secure Jigsaw's hideout inside the abandoned Wilson Steel Plant.

The victims of this trap were Officer Pete Baker and two of his fellow SWAT team members. In order to obtain it, Michael had to cut it out with a scalpel lying in a tool box before him. The key was surgically implanted behind his right eye. Once the game began, the mask would close in on his head and pierce it with the nails if Michael wasn't able to unlock the trap within 60 seconds. The inside of both parts was spiked with numerous pointy nails. Both parts were angled down from Michael's head. The trap, a so-called Death Mask, was divided in two separate parts, the back and the front part of the mask. He had a mechanical contraption locked around his neck, which worked similar to an iron maiden. The victim of this trap was Michael Marks.

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