Original Macintosh release was ported to PC98 and X68000 but MSX2/Apple IIGS/IBM PC/PC88 ports were canceled. MSX's cancellation was announced on ASCII MSX Magazine 1990-09 page 18 though it stayed in the release schedule until 1990-11.
": The Tomb of Setmoth" was dropped from the Japanese title and made it indistinguishable from the preceding Quarterstaff without subtitle released by Simulated Environment Systems.