Telltale's acclaimed episodic series The Walking Dead has sold over 8.5 million episodes, CEO Dan Connors told The Wall Street Journal. Connors said that about 25 percent of the sales come from iOS devices, and "at about $5 per episode, that's roughly more than $40 million in sales, not including any promotions."

Of course, The Walking Dead has seen its share of promotions, and is even a part of this weekend's Steam Holiday Encore sale. With Telltale Games planning to expand in the coming months, these sales numbers could equate to a much bigger conference room.

This article was originally published on Joystiq.