There are so many little details and Easter eggs to this game that will terrify and reward you if you're paying close attention! The black and white style gives it an excellent horror atmosphere. The puzzles and information you collect do a great job of guiding you through the game without holding your hand or shoving it in your face while not being overly vague. It's so difficult to strike that balance in games, but Professor Stitch and crew pulled it off!
Here's our, hopefully, entertaining play through of Under the Stairs as well: