2. Alien Invasion
Here's a plot that's been used in a multitude of game genres and types, be it the pared-down fun of Space Invaders, the high-tech assault that is Crysis, the authentic, gritty weirdness of Resistance and Gears of War, or the outright silliness of Duke Nukem Forever. Then, of course, there's the King of the castle - Halo, the game that changed everything for consoles and made them a viable platform on which to release FPS games. It also introduced some bizarre and unique alien races, completely revolutionising the alien invasion as we knew it. The problem? Just about every game of its type, and even some movies, have copied it, meaning that countless games to follow have just adhered to the same schematic; can anyone, for instance, really remember what the aliens in Crysis look like? The Resistance ones ring a faint bell, but they don't do enough to distinguish themselves in this crowded genre. Too many of these games - even well-made ones like the aforementioned - follow the very same plot; aliens invade, you fend them off, travel somewhere else, rinse, repeat, go to the alien homeworld for some sort of stand-off, return to Earth, fight a final boss, The End. It's just boring now, no matter how great the game looks.