4.5/5, superb! The look and feel are amazing, the limited color palette and crunchy sound effects combined with the ambient soundtrack make for a haunting experience. The puzzles are tough but fair, and the mechanics are clean and the theme adds to the game in a way few others have been able to master. The reason I took off half a point was twofold. One, and this is just me nitpicking, but the controls felt a little tedious at times, especially reset. I would know the solution to the puzzle but then spend a full minute or two trying to execute it, and when I got it wrong and reset the game it would take a few tries to get the buttons to do what I wanted. The second thing also relates to reset, I believe. I got all six pearls, and I was really excited to get to the end and get that bonus room thingy, but the game bugged out on me and I couldn't get to the end. I went past the room where you have to use two bricks to make the spider guy hit the switch, and then came back to get the final pearl in the hall before you introduce the spiders. Turns out when I got the pearl and got back, the spider in the room with the two bricks was no longer a spider, but a brick, and he was now back in the center of the room and the door was locked. I thought maybe this was intentional but I could not interact with the new brick, so I assumed it was a bug. Thought I would let you know! Thanks!