For a free, 2d side scrolling, Mascot Horror game, this is great. And it is free. Just give the game a play, it'll be around 25 to 35 minutes of your time and it's great and very well made.

Mr. Hopp has an interesting design as well, very creepy in some instances, and very well thought out. The mechanic of the sound, and going past corridors waiting for Mr. Hopp to pass is great.

Overall: 8/10