To start off with; I'm not a big Scooby-Doo fan and never have been either. Weak and cheap looking animations, boring characters, unfunny moments and each episode was basically always more or less the same. Scooby-Doo of course has continued to develop throughout the years and I must say I was liking this 'modern' cartoon way better than any of the old classic ones.
The main reason why I liked this movie was because of its comedy. When compared to all of the older Scooby-Doo TV series episodes, the comedy seems to have matured and the movie isn't aiming at just young kids but at some slightly older and more mature ones as well. I simply have to admit that this movie amused me and I even laughed a couple of times.
But at the same time, I just can't call it a great animated movie as well though. There's basically nothing special about it and it's still a pretty ridicules and simplistic one, with its story and settings. It's especially ridicules how this movie is basically a 80 minute long advertisement for WWE, in which a lot of WWE stars show up as themselves and are basically treated and presented like superheroes in the movie. It isn't just a movie that was made with the consent of the WWE but it actually is a movie made by WWE Studios, together with Warner Bros. Feature Animation.
But ridicules is all that it is. It really isn't ever anything too bad or distracting and certainly no reason for me to hate this movie. The main story itself remains the foremost reason why this works out as such an incredibly formulaic and average feature length animated Scooby-Doo entry.
The animations are all pretty good looking, as you would expect from a Warner Bros. animated feature. It has a modern style to it, though all of the classic characters still have their classic look. The movie itself even makes fun of this, numerous times (a few times too many perhaps) throughout the movie.
It also uses the familiar and classic set up of Scooby and the gang investigating some strange occurrences, involving a ghost like figure but it of course eventually turns out that it's nothing more but a person in a suit. The movie does a pretty good job setting up its mystery and it provides the movie with more than a few likely subjects. It's fun to guess who will eventually turn out to be the crook. It will leave you guessing and it never makes things too obvious for you.
It really is a pretty good and enjoyable modern Scooby-Doo entry, just don't expect anything too great or original.