 The theme of submerged cities with non-human worshipers recurs in Lovecraft's later works, most notably "The Call of Cthulhu" and "The Shadow Over Innsmouth".A sort of sequel can be found in the form of a role-playing game "The City in the Sea", where up to four characters must journey by submersible to the temple of the Mythos god Gloon (the malign force behind the events in "The Temple" whose human disguise is depicted by the ivory carving in that story) and end his threat to the human race.This game and its play mechanics may be found in "Cthulhu Now", published in 1987 by Chaosium.