I would say this is the best puzzle game I've ever played, but for that I'd have to rule out Baba Is You, so #2 best puzzle game ever.

Patrick's Parabox is all about placing boxes inside boxes, sometimes infinitely, sometimes not. The concept is simple, yet the execution is PERFECT.

Every puzzle feels like it introduces something new, like it has something to show you and make you go like “woah, I could do that?”
10/10, I'm going back to my box now.