Planescape: Torment Developer Retrospective is an upcoming compilation of developer diaries and blogs concerning the development of Planescape: Torment. It is a pledge reward given to the backers of both Torment: Tides of Numenera and Obsidian's Pillars of Eternity. The developers will share their thoughts, blog and diary entries about the 1999 game, which will give readers an insight into their experiences working on the game, behind-the-scenes stories, how it was created and how it influenced their later work.