Planescape: Torment is a role-playing video game developed by Black Isle Studios and published by Interplay Entertainment. Released for Microsoft Windows on December 12, 1999, the game takes place in locations from the multiverse of Planescape, a Dungeons & Dragons (D&D) fantasy campaign setting. The game's engine is a modified version of the Infinity Engine, which was used for BioWare's Baldur's Gate, a previous D&D game set in the Forgotten Realms.