To celebrate the launch of the Summer sale where will offer more than 500 games on sale for at least 50% off, for more than two weeks, the digital distributor is offering Torchligh, Runic Games’ single-player masterpiece, for free until 12.59 pm GMT on 20 June 2013.

In addition to the 17 day long sale, will have more than 150 games up to 85% off in daily deals running from now until 5 July 2013. Today’s daily bundles include all of GOG’s D&D titles, with such greats as Baldur’s Gate 1 & 2, Neverwinter Nights 1 & 2, Planescape: Torment and others; and 90% off as well on Alan Wake and Alan Wake’s American Nightmare.

Other featured developers and publishers that will be on sale include Electronic Arts, Activision, Atari, Ubisoft, and Square Enix; and indie studios with titles such as Legend of Grimrock, FTL: Faster Than Light, Hotline Miami, and Resonance.

Each daily deal starts at 13:00 pm GMT (that’s 14:00 London time, 09:00 in New York, and 06:00 in Los Angeles) and runs until 12:59 pm GMT the following day.