I've also played it semi-recently, and it's really, really intuitive – just like playing another game where you don't quite understand the rules. Things slowly

I've also played it semi-recently, and it's really, really intuitive – just like playing another game where you don't quite understand the rules. Things slowly start making sense. Marc (the creator) is an extremely talented designer for building a progression of levels that teaches you the concepts just through level design. You definitely don't get a formal understanding of the 4th dimension, though.