They Came From Plan 9! is a quick read which will give a Storyguide plenty of ideas to tie your game in with the movie. It present your game of They Came From... as a sequel to the infamous B movie and includes ready made character to play from it. You don't have to have seen the movie to enjoy this supplement, but as suggested within it, watching the movie with your players before hand will help get the most out of it.
[4 of 5 Stars!]