Torchlight is free to download to GOG.COM for two days.

On the website GOG.COM started the summer sale of the games "2013 #NoDRM Summer Sale". Including, only until the end of June 20, the famous Diablo-like game from Runic Games Torchlight will be available for free download.
The game is available for Windows (XP, Vista, 7, 8) and Mac OS X (10.6.8 or higher).
As a bonus to the game you get a manual, wallpaper, soundtrack, avatars and a level editor.