Which developer released XXX?
Legends of Valour
Legends of Valour is a role-playing video game developed by Synthetic Dimensions and released by U.S. Gold and SSI in 1992 for the Amiga, Atari ST and PC DOS systems, with the additional FM Towns and PC-98 versions in 1993-1994 in Japan only (as Legends of Valour: Gouyuu no Densetsu).
Synthetic Dimensions