Polybius, MK Ultra, and the CIA's Brainwashing Arcade Game

Polybius, MK Ultra, and the CIA's Brainwashing Arcade Game (subtitled Conspiracy?) is the 36th episode of Game Theory on The Game Theorists.

Description
''Polybius is the biggest video game urban legend. An arcade game that brainwashes its players with subliminal messages. Most write it off as a glitchy version of the Atari game Tempest, but the CIA has a secret they don't want you to know about: MK Ultra. Brainwashing, mind control, LSD. Get ready 'cause this is some CreepyPasta served up Game Theory style!''

Trivia

 * This is the first theory based on an urban legend or creepypasta.
 * This is the first episode with the sixth Game Theory intro.
 * This is the first episode without credits.