[leppr]

The game trains you to see circles as squares. You're looking at circles but they really act like squares so when you go back to reality it's like you forgot squares existed because the whole concept of square is made obsolete in the game's world.

I'm really surprised this works so well, it really shows how plastic and manipulable our brains are. This could become a reference example on perception or an analogy for higher level perception-shaping.