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The Search for Planet X (Solo Option)


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. In 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

Solo Play-through and Discussion

The Search for Planet X Review


A selection of files from BoardGameGeek. Links will open in a new window or tab.

The Search for Planet X – Solo Rules

The Search for Planet X – Official Solo Rules

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The Search for Planet X Solo Playsheet

A customized The Search for Planet X play sheet specific for solo play.

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The Search for Planet X – Official Full Rulebook

The Search for Planet X – Official Rulebook.

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Search for Plant X Teaching Aid and Reference

To fit an A5 page.

Summarises rules and the steps of actions in a bullet pointed layout. Doesn’t include material that is already sufficiently explained on the Player Screens.

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