Destroy All Humans

Gears of War got us thinking: Massive explosions. Guts strewn everywhere. People running in terror. Few things ignite the minds of gamers like a good alien invasion. It may be bizarre or terrifying (and in the case of Gears of War, it may come from underground instead of outer space) but in video games, aliens always bring massive destruction in their wake. This week, we take a look back at the seven games with the most memorable, exciting or disturbing alien invasions... ever. 7. Halo 2