from Ars Technica:

Stepping into my hands-on with Riot Games' League of Legends, I wasn't entirely sure what to expect. I hadn't really heard much about it other than that it was an RTS/RPG game that started out as the popular Warcraft 3 mod Defense of the Ancients. When I sat down and actually played with the game for a while, I quickly realized that this was one of the coolest games on display at this year's Game Developers Conference.