Monster House is an interesting concept, a semi-horror movie in animation, though it has been done before; Corpse Bride comes to mind.
The animation is super; there are places where the backgrounds look real, as in shot by a regular camera. The director used different camera angles, like sideways from the bottom view, to make a scene scary, so that was interesting.
The movie is about a haunted house and a kid who lives directly opposite the house, and how he and his friends discover the secret of the house. It’s not a movie that little children will enjoy, unless they like scary movies.
The movie’s funny in parts but overall it’s just watchable. I would rate it a tad higher than Open Season.