Soundtracks are provided by:. www.newgrounds.com. www.incompetech.com. Dota 2 or Defence of the Ancients 2 is a free-to-play multiplayer online game developed and published by Valve Corporation in 2013. Dota 2 is one of the most actively played competitive games with millions of players across the world. Within the game, the two sides – The Radiant and the Dire are fighting against each to defeat their Ancients..