When Riot Games first announced that it was adding the ability to play co-operatively against AI bots to League of Legends, it expected it to be used by noobs, says senior producer Mark Norris. "When we put it out there, we put it out there with sort of the sole intent of having new players get an introduction to League of Legends."

But what the company found was that the game mode, which takes some of the human element out of the MOBA genre's relatively steep learning curve, was actually being used by all sorts of players. "One thing that kept coming up was the majority of the people who play League of Legends will play, every week, at least one co-op vs. AI game. And it's actually the primary game mode for a surprisingly large percentage of players."

With that insight, then, it's probably not surprising to hear that Riot is updating the co-op vs. AI game mode, enabling AI bots for 40 of the game's champion characters, as well as adding play on the Dominion game mode to the mix.