 If you see mist floating inside any backroom's level, you should get out ASAP. Let me explain. Through the infinite halls and floors of the backroom's complex, you're likely to see many different things. Smilers, corpses, hounds, but these all look scary on the outside so you know not to approach them. But Entity 78, or Chrono Wisps, are the opposite. These entities look like an ethereal fog floating through different backroom's levels. They have the ability to create space-time anomalies and pretty much warp any wanderer's sense of time and perception of reality wherever they are. It's almost like a hallucinogen. Wanderers will often walk into a cloud of this mist, not knowing that it's there, only to be trapped in a time loop for days or weeks or even years until they succumb to starvation or dehydration. So if you do see this mist in any backroom's level, run away like your life depends on it.