A couple years back I remember seeing on some forum or the other an entirely weird (and there for wonderful) collage-like ad for our favorite fantasy game from OMNI magazine.
With a vaguely New Wave aesthetic backed by the liquid surrealism that seemed to be the bread and butter of the art of that magazine (a look and tone that seeped way down into the space opera reaches of my soul) the ad really stood out from the cartoony ones that TSR pumped out at the time in its quest for a young market share.
Until lunch hour--in which I happened to be (virtually) flipping through two more issues from the late part of 1981—I was unaware that that ad had some companions. All three posted here for your non-ironic/ironically-detached viewing pleasure.
(By the way, you can find the entire run of OMNI here legally and free.)