Steam offers downloads of DOTA 2 for Windows for free. That's the lowest price we could find for this just-released multiplayer online battle arena game. When you click "GET DOTA 2", you'll be added to the queue and will receive an email when you're able to download the game. Click here for more information about the DOTA 2 Launch.

Link: http://store.steampowered.com/app/570