# The Search for Planet X

The Search for Planet X is a board game for 1–4 players. It plays in 60–75 minutes and is meant for ages 13 and up. Ludoya players call it best with 2. It is rated 8.2 out of 10 by 93 Ludoya reviewers. The cheapest copy in stock is $45.00 (United States).

- **Players:** 1–4 (best with 2)
- **Playing time:** 60–75 minutes
- **Minimum age:** 13+
- **Complexity:** 2.4 out of 5
- **Year published:** 2020
- **Categories:** Space Exploration, Puzzle, Deduction
- **Mechanics:** Solo / Solitaire Game, Rondel, End Game Bonuses, Action Points, Paper-and-Pencil, Deduction, Turn Order: Time Track
- **Ludoya rating:** 8.2 out of 10, from 93 reviews
- **Owned by:** 229 Ludoya players
- **Plays logged on Ludoya:** 971
- **Unique players:** 710

**Designers:** Ben Rosset, Matthew O'Malley

**Artists:** James Masino, Michael Pedro

**Publishers:** Ігромаг, Renegade Game Studios, Foxtrot Games

## Where to buy in United States

| Shop | Price | Link |
| --- | --- | --- |
| Gamers Guild AZ | 45 $ | https://gamersguildaz.com/products/the-search-for-planet-x |
| Cardhaus Games | 45 $ | https://www.cardhaus.com/the-search-for-planet-x/ |
| Board Game Bliss | 43.95 $ | https://www.boardgamebliss.com/products/the-search-for-planet-x |
| eFantasy | 34.99 € | https://www.efantasy.gr/en/products/board-games/209278-board-game-%CE%B1%CE%BD%CE%B1%CE%B6%CE%B7%CF%84%CF%8E%CE%BD%CF%84%CE%B1%CF%82-%CF%84%CE%BF%CE%BD-%CF%80%CE%BB%CE%B1%CE%BD%CE%AE%CF%84%CE%B7-%CF%87 |
| Alphaspel | 325 kr | https://alphaspel.se/491-bradspel/348612-the-search-for-planet-x |
| Ludifolie | 31.5 € | https://www.ludifolie.com/11006-a-la-recherche-de-la-planete-x.html |
| Spelexperten | 383 kr | https://www.spelexperten.com/sallskapsspel/strategispel/the-search-for-planet-x.html |
| Zatu Games | 31.29 £ | https://zatu.com/products/the-search-for-planet-x |
| Good Games | 59.99 $ | https://www.goodgames.com.au/products/the-search-for-planet-x |
| Gameology | 69.45 $ | https://www.gameology.com.au/products/the-search-for-planet-x |
| Games Empire | 71.99 $ | https://gamesempire.com.au/products/thesearchforplanetx |
| Hyggeonkel | 349.95 kr | https://www.hyggeonkel.dk/produkt/search-for-planet-x |
| Spielezar | 64.9 Fr. | https://www.spielezar.ch/brettspiele/die-suche-nach-planet-x |

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- [Planet Unknown](https://www.ludoya.com/games/planet-unknown)
- [Three Sisters](https://www.ludoya.com/games/three-sisters)
- [Entropy](https://www.ludoya.com/games/entropy-2)
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## Rules questions

### If a survey or target shows a sector as “empty”, does that mean it’s Planet X?

No — an empty result can mean the sector is truly empty or that it contains Planet X; both surveys and targets treat the Planet X sector as appearing empty (page 9).

### When I take the Locate Planet X action what exactly must I specify to succeed?

You must select the sector you think contains Planet X and also identify the objects located in the two adjacent sectors; you only succeed if both the sector and the two adjacent objects are correct (page 10).

### How many times can I use the Target action and what does it reveal?

You have two target tokens and must spend one each time you target a sector; after both are used you can no longer target, and a target reveals either the object in that sector or that the sector appears empty (page 9).

### Can I research the same topic twice or do research actions back-to-back?

No — each research topic gives one private logic rule and there’s no reason to select the same topic again, and you are not allowed to take Research twice in a row (page 10).

### When do conferences and theory/peer‑review phases occur during play?

After you advance your pawn you rotate the earth board clockwise toward the pawn farthest back, pausing when the arrow reaches any conference or theory icon to resolve that phase (conferences revealed only the first time an icon is reached); theory submission happens when the board hits a theory icon and peer review occurs when theories reach the inner space (pages 13–15).

### What happens if a theory is judged correct or incorrect in peer review?

If a theory is correct the object in that sector becomes confirmed and correct theory tokens remain for end‑game scoring; if a theory is incorrect it is removed and the submitting player advances their pawn one sector as a penalty (page 15), and once a sector’s object is confirmed no new theories may be placed there (page 14).

## Links

- [This page](https://www.ludoya.com/games/the-search-for-planet-x)
- [The Search for Planet X in the Ludoya app](https://app.ludoya.com/g/the-search-for-planet-x)
- [BoardGameGeek entry](https://boardgamegeek.com/boardgame/279537)

_Data from Ludoya, updated 2026-09-19. Ratings, ownership and play counts are Ludoya's own._