I'm sick of seeing a multi-player function in games just for the sake of having multi-player. If multi-player has to be in it...then it should be the core of the game and not just something tacked on there to appeal to the online fanatics (Ghostbusters and Grand Theft Auto 4). This also goes for multi-player games with the weak addition of a single-player (Halo 3 and Resistance 2).