Will you be the first astronomer to discover Planet X?

Since 2016, astronomers have been trying to locate a mysterious planet causing unexplained phenomena at the far reaches of the Solar System ...

In this logic and deduction game, you play as astronomers observing the starry sky, clashing to determine the location of this mysterious planet. Detect celestial bodies with clues, explore astronomical knowledge, secretly write down your results, and see Planet X first!

THE +
• 4 difficulty levels adapted to play together
• scientific anecdocts for more immersion
• included a single player mode