Strategic Simulations Incorporated, a computer game company which made it big after years of lacklustre submarine and Civil War combat simulations by managing to wrangle a license from TSR to develop games in the ADnD setting. This resulted in the Golden Box games, as well as a couple of exceptions - Darksun I and II, an Al-Quadim game, a Spelljammer game and Menzoberranzan. Then the license expired. No one ever heard of them again.