Since the game's October 2009 release, the game had sold 500,000 copies on PC, with the rest of the sales coming after its launch on Mac and XBLA.
"We're very excited to share Torchlight’s success with our fans and supporters," said Runic president Travis Baldree in a statement. "It's been a great ride so far and we can’t wait to give everyone more of what they want in Torchlight II. It isn’t every day you sell a million games. We’re grateful to be here."
Torchlight II is due for a July release on PC on Steam.