Master of Mutant Design
It may be short, but it is the only GW adventure ever published in Dragon. And it is much better than some of the drek they released as modules.Cavern of the sub-train: Oooh. Looks like we have a second big feature this month. This is a gamma world module, another case of taking a perfectly ordinary 20th century invention and making it into a mysterious adventure for the mutants of the future to deal with. A pretty short scenario that can be used as a throwaway, or expanded into a whole series of adventures as the characters explore the underground tunnels and find things lurking beneath in various places.
Not only is the critter cool, it is fun to read the whining in the future issues about how it isn't something to kill and steal from.pelins, which are essentially organic zeppelins, and therefore inherently utterly awesome, especially once you factor in the ecological stuff which tries to put a logical slant on how such a creature could exist (ha).