The 2012 sequel to the original 2009 hit Torchlight action RPG, Torchlight II, is coming to the Mac by way of Steam beginning Monday. Runic Games added a number of much-requested features to the sequel, and all of them are included in the Mac version -- including a free multiplayer mode, customizable characters, a level editor (coming soon), a much larger world, level randomization and a new feature called "New Game Plus."