 The fictional city of Yavdlom in the "D&D" Mystara setting – which in the following years included many locations featured in old D&D material – is an homage to him (Yavdlom being the backward reading of Moldvay).Moldvay also co-developed TSR's "Gangbusters" role-playing game and wrote adventures for TSR's "Star Frontiers" game

Moldvay developed "Lords of Creation", a role-playing game published by Avalon Hill.In 1985 he created the one-shot game "The Future King" based on Arthurian legend.