The Brain Tumbler is a device that allows subjects to enter their own minds, located in Sasha's lab under the GPC. It was used by Sasha Nein to allow Razputin to explore his true potential. This session corresponds with the Brain Tumbler Experiment level.
According to Sasha, each test using this machine costs the taxpayers a lot of money.
- Apparently, Sasha has picked this Brain Tumbler up at a low price, as evidenced by his saying: "Why did I have to buy the cheap Brain Tumbler...?" when something Raz was seeing appeared not to make sense.
- In the French version, the machine's name is "Tour Mental" (mental turn), also a pun on "tourmente", which means "tormented".