L4D, Dead Island, Day Z, War Z, Unity Z
...... Zombies everythere.
Time to make an Pro-zombie game like "Stubbs the zombie".
Yeah "Zombie Commander"... start with an single infected person and grow your herd till the whole town is yours. Next level = next town.
Addon for the Game comes as "Zombie Commander 2 (Japan Overun)", "Zombie Commander 3 (visit Europe)".... and so on.