Published by Wizards of the Coast.
Love it or hate it, 1980’s Expedition to the Barrier Peaks (originally the tournament module for Origins II in 1976) remains one of the most unique and enigmatic offerings ever published for Advanced Dungeons & Dragons. Gygax writes in the foreword that the adventure was initially intended to introduce Metamorphosis Alpha to the D&D community, both to raise the newer game’s profile and to demonstrate to aspiring DMs how one might create “science fantasy,” as he terms it. A genre-bending mixture of fantasy and science fiction, S3 provides what is essentially an enormous dungeon crawl through the belly of a marooned spaceship. While a great deal of problem solving awaits PCs in the forum of experimenting with and utilizing advanced alien technology, and there will no doubt be some role-playing opportunities when interacting with the androids aboard the ship, this module really steps up on the lethality front and the players will need to strap on their game-day gear. Most of the weirdest monsters ever devised for AD&D (some of them altered and/or augmented by radiation) lurk within, not to mention malfunctioning robots and virulently toxic substances–potentially deadly foes all.
Read the Full Review at Dragonsfoot
Based loosely on a tournament scenario from Origins II in 1976 that combined elements from Metamorphosis Alpha and a portion of Gary Gygax’s Castle Greyhawk, 1980’s Expedition to the Barrier Peaks is presented as “an exciting insertion into your campaign and as a primer on how to combine ‘science’ into your fantasy roleplaying.” Gamers have been arguing about it ever since. That’s because the decision to include overt science fiction elements into what is ostensibly a fantasy adventure scenario is a contentious one. One of the fault lines that rumbles beneath the surface of the hobby is the lack of distinction between fantasy, horror, and science fiction, three now-separate genres that had, prior to the 70s (if not later), peacefully co-existed as part of an indistinguishable mass of literature.
Read the Full Retrospective/Review at Grognardia.