Zombie Army 4 doesn’t reinvent the wheel. If you have played a shooter or a game featuring zombies in the last 5 years, you will have seen almost everything Zombie Army 4 does throughout its story campaign. Big armored zombies, last stand moments against waves of enemies, some RPG mechanics, co-op, special abilities,…
Source: Kotaku – Zombie Army 4 Is Just Another Zombie Game, But It’s A Really Good One