Aliens have long observed Earth, coveting its natural reserves of saltwater, desert sand, and french fries. See things from an above-Earth view with today's Groupon: for $15, you get a four-person, 18-hole game at Space Golf in Orland Park (up to a $32 value). Children under five years old get in free.

The ocular explosion of Space Golf wows earthlings as they putt-putt in its glowing mini-golf landscape. Awash in black light and day-glo paint, the 18 holes of mini putt give anonymous alien aces a chance to bounce balls in a fluorescent-flavored Area 51, in the midst of a spaceship troop landing at Roswell, or under the searing gaze of a scorekeeping alien. Amongst the holes, old sci-fi movie clips play, marooned silver saucers attempt self-extrication, and a panel moderated by Darth Vader discusses the authenticity of 3rd Rock from the Sun and Alf. Earth-dwellers can obtain 3-D glasses to enhance the experience for a small additional charge ($1.59).

Though not included in this Groupon, post-putt-putt, players nosh on pizza and popcorn in the sci-fi café, accompanied by outsiders such as E.T. and the little invaders that once occupied the Hamburglar's shell. The Alien Arcade gives golfers a go at popular earth games and even the chance at planetary prizes, such as blow-up alien friends and chocolate delicacies from the Martian metropolis.