Graphically, HorrorLand is pretty much what I expected, and wanted, to see. The amusement park they are in is full of monsters, but they're not so scary that you die of fright just looking at them. There are people there too for you to talk to. Of course, everyone is under the assumption that the monsters are just humans in costume, but us Goosebumps fans know that that's not the case. They did a wonderful job of creating the park. Each area is just a little creepier than the next, and looks very different. I never got bored of the scenery. You do have to keep in mind that this game is meant for kids 10+. As such, it is not meant to be so scary that you can't play alone in the dark without continually looking over your shoulder like you would in Silent Hill or something. It is kid-friendly scary, not adult horror.
The creepy background noises are perfect for the game. The music sounds like something you would hear in a classic horror movie. It is a simple but very creepy piano sound. Each park has their own background noises and commentary.