I went with some friends and did the dark room.
Without giving away any info on the different puzzles, I'll just say that the dark room is HARD!! I don't know how people finish any of these rooms in like 20 minutes.
I'd come here again for sure. It seems fun.
I keep thinking though: wouldn't it be great if there were no explicit clues and the puzzles didn't eventually lead to a bunch of lock combinations. It's a nutty idea, but I'd love to try something like that, if one were to exist..