Six titles from adventure game developer Telltale Games are going for 80 percent off on GOG.com, and all titles in the site's Interplay catalogue are half-off, the site announced today.

Telltale's Tales of Monkey Island, Back to the Future: The Game, Wallace and Gromit's Grand Adventures, and Sam and Max titles Save the World, Beyond Time and Space and The Devil's Playhouse are discounted until Tuesday, Nov. 13 at 11:59 a.m. ET.

Additionally, all games from developer/publisher Interplay are 50 percent off, including Fallout, Freespace, and Descent titles. Players can purchase all 32 games for $95.68, saving buyers $96. The sale will last through Friday, Nov. 16 at 11:59 a.m. ET.