sorry so long, but i just have something to ask of yogurt, now that i answered his request:
now that i have removed the offensive bits, might you actually respond to my argument?
or do you deserve a bit of a hand-clap for such clever evasion as well?
simple survival is part of the plot, melee is the weapon choice/type, fps is a game type (not to be confused with genre as it is more intefaced based), top down is an interface. Horror is the only Genre you actually put up.
Genre is more related to what actually draws in people to in the case of movies go and see that movie, in the case of games it's what keeps you playing a specific style of game.
Style is important as it is a much closer defenition of genre than anythign else that's been offered up.
plot doesn't dictate genre though it can contribute, interface has nothing to do with genre, weapon choice is also seperate but can contribute.
While you are correct that zombies are the antagonists, they also indicate the style or genre of the game.
By default when we hear zombies we know we've entered into the
Science Fiction primary genre with a
Horror sub genre. Zombie genre isn't likley to be coined in many film schools; but it exists on the web and in many circles as an easy descriptor for a game/movie/book where you have zombie attacks followed by large openings for plot line development and character development, followed by more zombie attacks. As a genre zombie films/games/books give a basic setting some genetic issue, natural disaster, etc happens that causes nearly everyone to become zombies with a specific few left unchanged and finding out why they are left unchanged is typically key to the plot and sometimes character development.
Also while film/book genres are more static and predefined, game genres have largely been left open to the person, developer, store. What you might consider action/adventure could be found on a different shelf under sci-fi shooter. What you consider survival might be found under horror. There is no real authority on game genre, most of the time review sites wing it when announcing the type of game. They say whatever type it is to them after they played it. So once again "no such thing" is my issue. I'll counter with another oxymoron "never use absolute statements"