The Search for Planet X is a tabletop board game developed by Foxtrot Games LLC. In this game, players take on the role of astronomers searching for a large, distant planet to explain the unique orbits of objects in our solar system. With the help of a companion app, players will use observations and logical deductions to uncover the location of Planet X and other celestial objects.

The game revolves around the concept of deduction and strategy. Players interact with the app as they perform various research actions, noting down their findings on a deduction sheet. By piecing together all the available information, players can publish theories and score points.

The Search for Planet X captures the excitement of scientific discovery, as players compete with each other to unravel the mysteries of the universe. With its engaging gameplay and puzzly nature, this game provides a unique and immersive experience for astronomy enthusiasts and strategy game lovers alike.