Valve's free pro-gaming documentary hits iTunes, Steam and YouTube (video)

If you didn't make it to Free to Play's San Francisco premiere last night, Valve (yes, that Valve) has you covered. The Dota 2 tournament doc is now available on iTunes, Steam and YouTube for the very reasonable price of zero dollars. The Valve-produced documentary clocks in at a little over an hour, and, as SlashGear has noticed, the gaming giant has also released a few outtakes and behind the scenes clips as well. We've embedded everything after the break should you want to give it a peek for yourself. If you're in the dark about exactly why the game's so popular, maybe watching players from all over the world duke it out for a million-dollar top prize will clear a few things up.