	ameMaker]] (1985), Wargame Construction Set (1986), Shoot'Em-Up Construction Kit (1987), Mamirin / Dungeon Manjirou (1988), and Arcade Game Construction Kit (1988) appeared in the 1980s on home computers. "3D Construction Kit" was released on the ZX Spectrum in 1991, and contained a full polygon-based world creation tool. Most of these early design frameworks are specific to one or another genre.