Progphene

Progphene is a dangerous substance and gas found throughout some levels in the Progressiverooms. It is toxic to humans and can give the same side effects equivalent to Carbon Monoxide poisoning, such as blocking the blood flow, general coughing or other symptoms that can be life threatening.

The first level that has ever been discovered containing Progphene is Level 151, which the drills that are going at a slow rate will release Progphene if destroyed by a weapon that can damage the drill greatly.