You cant go to the bookstore without Noticing these types of books. (Also in video games and movies)

1. Zombies (Cant go wrong with zombies)

2. Space Marines (Cant go wrong with space marines either)

3. Super Powers (Duh)

4. Super Soldier (One guy vs. an army)

5. Hyper advances aliens vs. humans (Halo, Mass Effect, etc)

6. Aliens in general (Is it a sci-fi? If so, it has aliens.)

7. World War 2 (There is only 13000 video games of WWII)

8. World War 3 (Why no World War 1 games?)?

9. Earth on the brink of destruction (Meteors, Volcanoes, Aliens... Earth is always in danger)?

10. Fantasy world involving dragons (Dragons always win. Always.)

11. Magic (Harry Potter, LOTR, etc.)

12. Corrupt Government (Cant imagine what this would be like)

13. Super Virus kills a whole bunch of people (Perhaps its not used that much, but its a great storyline.)