

means you can throw a lot of them at the player all at once without using an unworkable amount of system resources.

Manic, "fantasy"-type shooters like Serious Sam or Painkiller love using enemies of this type, as their simple A.I. Particularly nasty examples of Zombies will actually explode once they get near you. They can be slow or fast, but usually come in large numbers but have low durability. The main thing is that all they know how to do is run at you and attack. Zombies need not be actual zombies they can be anything from minor hellspawn to a thug with a knife and a 60 point I.Q. Some zombies may carry guns, but instead of using cover or fighting tactically all they can do is run straight at you while firing.

As you'd expect from the name, the zombie is pretty much limited to charging (at a crawl or at a run) at the player and attacking them with melee hits at close range. The zombie is pretty much as simple as you can get in terms of an FPS enemy.
