Overview
At a glance
Is this game right for my group?
ABG editorial scores on a 1–5 scale.
Harder to teach
High replayability
Highly interactive
Scales well
Deep strategy
How it plays
How does it play?
At the edge of our solar system, a dark planet may lurk. In 2015, astronomers estimated a large distant planet could explain the unique orbits of dwarf planets and other objects.
Core mechanisms
Key systems that shape the decisions players make.
Action Points
Spend a limited allowance of points across several possible actions each turn.
Deduction
Combine clues and exclusions to identify hidden information.
Paper-and-Pencil
Record choices and results directly on a personal sheet.
End Game Bonuses
Earn additional points for meeting conditions evaluated when the game ends.
Solo / Solitaire Game
Provide rules and objectives designed for a single player.
Turn Order: Time Track
Determine or change the order in which players take their turns.
Read the full game description
At the edge of our solar system, a dark planet may lurk. In 2015, astronomers estimated a large distant planet could explain the unique orbits of dwarf planets and other objects. Since then, astronomers have been scanning the sky, hoping to find this planet. In The Search for Planet X, players take on the role of astronomers who use observations and logical deductions to search for this hypothetical planet. Each game, the companion app randomly selects an arrangement of objects and a location for Planet X following predefined logic rules. Each round, as the earth travels around the sun, players use the app to perform scans and attend conferences. As they gain information about the location of the objects, they mark that information on their deduction sheets. As players learn the locations of the various objects, they can start publishing theories, which is how players score points. As more and more objects are found, players narrow down the possible locations for Planet X. Once a player believes they know its location and the objects on either side of it, they use the app to conduct a search. The game ends when a player successfully locates Planet X, and all players have a final chance to score some additional points. The Search for Planet X captures the thrill of discovery, the puzzle-y nature of astronomical investigation, and the competition inherent in the scientific process. Can you be the first to find Planet X? —description from the publisher