With more playable characters, there is no stopping this post-apocalyptic team as you try to survive throughout the game. 

Valve Corporation gave Rebellion rights to use their characters so users could enhance their own gaming experience and use some of their favorite players. The best part, the characters are free (on Steam of course) and you can also download a free digital comic revealing how the Left for Dead characters were infused in the Zombie Army Trilogy video game. 

Use Rochelle, Zoey, Nick and Bill in the horde mode, or complete missions with Coach, Francis, Ellis and Louis. Whatever floats your zombie-hunting boat. 

Happy hunting everyone!