Lords Of Creation RPG: How Did I Miss This?

I was mentioning earlier that I am a big fan of Philip Jose Farmer's World of Tiers series. It informed my early conception of D&D. I am also a big fan of Avalon Hill Games. So I'm wondering how this game slipped under my radar? Lords of Creation is authored by Tom Moldvay, the same guy who edited that much beloved D&D Basic Red Box ruleset.

Published in 1984, by Avalon Hill, Lords of Creation is a role-playing game where the players travel from one pocket-dimension to another, with each dimension having it's own physics and theme. The characters travel through inter-dimensional gates, and, as the characters increase in level, they ultimately unlock their own super-powers. Apparently, one of the early sample adventures is the search for a special horn that will allow the players unfettered access to myriad pocket dimensions.

I am sitting here, blown away. First, how did I miss this game? As as fan of Avalon Hill, I thought I kept myself up-to-date on what they were publishing. Obviously not.

Second, i'm thinking to myself, this game has got to be a role-playing game, based on the Philip Jose Farmer's World of Tiers series!

I go hunting for a review of this game, and I come across a couple:

A review on RPGNet

A review on Jeff's Gameblog

Andy Collins' review

No mention of Philip Jose Farmer. No mention of The World of Tiers.

Am I seeing something that isn't there?