Shaun of the Dead centers in London and most of its comedic effect comes from its brilliant use of foreshadowing, along with its character personalities. It's one of those movies that you can watch over and over again, and realize something new each and every time. In this movie, the characters seem less aware of the situation surrounding them, as the zombie outbreak seems to happen in the course of one day. As the movie describes itself as a “romantic comedy with zombies”, I find it to be more of a zombie movie with a romantic comedy tossed in. It really seems to take my mind off of the story at hand by tossing in so much action, even though there's really not much zombie killing happening. I notice it also holds true to the classic, slow moving zombie that's so rarely seen in the newer films of its genre and age. You also get much less of a world range view and more of just the settings they move through. You're never really aware of whether or not the entire world is being plagued with zombies, or if it's just London. You also don't get a blatant, in your face explanation of what caused the outbreak itself, until the end. The characters already know one another, and have connections made before the outbreak, so there's a lot less time building relationships and a lot more time establishing where they stand in accordance to one another in the beginning of the film. This film is unique in that the zombie situation is contained in the end of things, and humans regain control.
Zombieland has more of a worldwide view of things, letting the viewer know that the whole earth is fucked, not just the area the characters are in. The characters don't know each other, initially, and the movie centers more around them making bonds with one another and letting the viewer know what each individual character is about. They're all very different, and it's likely you'll find at least one of them relatable in some way. The movie immediately lets the viewer know how the outbreak began and exactly what caused it. Although this film features less zombies than Shaun of the Dead, it has a ton more zombie killing and features the newer, faster zombies. Almost every zombie encountered is completely destroyed in the most satisfying way. It also features zombies in the first few frames, as opposed to Shaun of the Dead which had actions leading up to the very first zombie encounter. This movie is constantly funny because of the characters, and the characters alone. The casting seems almost perfect, even throwing in a hilarious celebrity cameo. Although this movie is full of laughs, it has its heartfelt moments. A couple even brought tears to my eyes but, in the next breath, had me laughing once again.