 Full production on the game started around November 2008, meaning that the game's total development period was approximately 11 months.At the 2009 Game Developers Conference some members of the Runic Games team were present with an early version of their single-player game, at which point it was revealed that the title would be "Torchlight".One notable addition to the staff was Matt Uelmen, composer for Blizzard Entertainment's Diablo series.