The story of DotA, or Defense of the Ancients, is an odd one. It started as a Warcraft III mod, spun off into bigger games like Riot's League of Legends and S2's Heroes of Newerth, and a sequel, called Dota 2, is coming soon from Valve. Many companies, from Petroglyph to Hi-Rez Studios, are trying to get in on the emerging genre, including, for the first time, Blizzard. Blizzard DOTA doesn't yet have a release date, but it's already a lot of fun...