11. Fast zombies (Half-Life 2) Ravenholm

Forget your typical image of the slow walking seemingly turtle like zombies.

These old, outdated scary monsters have been updated for your horrific pleasures to version 2.0. Half-life 2 redefines the idea of zombies and throws gamers into the fray with startlingly fast zombies.

These zombies are humans that have been mind controlled by head crabs. Fast zombies appear to be missing all of their skin and stand as nothing more than a pile of reddish pink muscles. Capable of climbing and leaping, these monsters will slash at you with sharp claws and make sure to give you a few heart stopping moment.