AT THE EDGE OF OUR SOLAR SYSTEM...
...a dark planet may lurk. In this competitive logic game, players take on the role of astronomers, surveying the night sky and attempting to deduce the location of this hidden planet. Do you have what it takes to find Planet X?
 
Earn renown by locating Planet X and by submitting correct theories about the locations of other objects in the solar system. The player who contributes the most to this astronomical investigation will score the most points and win the game!