From publisher blurb:
vs. Moon Men Adventure: Santa Claus is Coming to Anytown
... and He Needs You to Save Christmas!
Frank has played Santa Claus to the town for decades, and he didn’t fight in the damn War halfway around the world to not get to be Santa to all the good boys and girls of Anytown, USA— spacemen from the Moon be damned! But, not everyone is quite as willing to allow this fat, jolly fellow to gather all the townsfolk together, or wander door-to-door after curfew.
vs. Moon Men is a roleplaying game in which players take up arms against alien invaders from another (but very nearby) world! Steal a ray gun and take the fight to them, or fight from the shadows while avoiding spies and collaborators. Fight for freedom, stay out of the way, or help the invaders (but only if you’re a jerk). The Moon Men are here, and somebody needs to stop them! All you need are friends and two decks of normal playing cards with the vs. Moon Men rules book and this adventure!