Strategic Simulations, Inc. (SSI) was a foundational force in computer role-playing and wargame design during the 1980s and 1990s. The publisher held the coveted AD&D licence for years, producing Dungeons and Dragons adaptations alongside original strategy titles, with Spelljammer: Pirates of Realmspace and Al-Qadim: The Genie's Curse among its fantasy RPG catalogue. Its roughly 142 titles represent a defining era of PC gaming history.