Hands down, it's the best escape room in Vegas! My friends and I have gone to many different escape rooms in Vegas, but nothing could beat the quality offered by the Basement.
Without giving away too much, their have live actors and the set ups (decoration, etc.) were top notch. Though it may feel scary, it's nothing like the haunted house. You have to solve various types of puzzles, not just combination locks like most places do.
Very challenging, so you'll want a good group of friends to participate with you. I would say 6 is probably the best for the Basement and 8 for the Study. Apparently the Study is chapter 2 after the Basement.
I want to talk more but don't want to give away too much. Definitely worth the try!