FREE: Zombie Killtime Steam Key

The listing, Zombie Killtime Steam Key has ended.

$6.99 value! From the Steam Store:
Zombie Killtime is a fast-paced, action-packed, zombie platform shooter with 4 player coop gameplay. Survive against endless waves of zombies with your friends as you upgrade your guns and earn new ones.
Features
Very fast-paced gameplay
Four player co-op, locally or online
Over 20 different weapons, each with a unique style
More explosions than a phone in a microwave
Zombies with special abilities, like being able to shoot you with actual guns instead of just standing there
Completely customizable characters; Become Santa Claus or an alien from space, it's your choice
Full blown level-editor to customize your own Zombie Killtime experience and play it online with friends!
Online Leaderboards and Achievements to compete with the world!