It certainly has, but I'm seeing more and more influences in rpgs these days. A lot of third party game settings are adding in clockwork horrors, gears and cogs. Zobeck has a strong steampunk element, the New Epoch is actually built on a cog, and Rhune is described as viking steampunk (or stormpunk!). So I guess I've just had a glut of maps with cogs in them recently, and it's nice to be able to release a map for them.