Valve has created some of the most popular games in history, but which of their franchises would prove the Valveiest in an ultimate battle to the death? 

This video attempts to answer that questions with its collection of Valve characters including those from (in order of appearance) Team Fortress 2, Counter Strike, Dota 2, Left 4 Dead, Left 4 Dead 2, Half-Life 2, Ricochet, Day of Defeat, Alien Swarm, and Portal 2.

Also, I don't think you'll be shocked when you see who's the last (free) man standing.