It's not just a game. It's a perplexing yet fascinating interactive experience full of surprises along the way. It's certainly one of those experiences you'll never forget. It's the kind of experience that begs the question "why". It's best left to be said by summarising the whole thing in just a sentence:

What the fuck even is this experience?

Whatever it was, it's the sort of one that's definitely without a doubt worth experiencing.