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
- innovative app integration
- engaging logic puzzle
- scales in difficulty for experienced players
- app reliance may be off-putting for some
- depending on technology access
- astronomy-based deduction with a companion app
- Astronomers locate Planet X using real astronomical reasoning
- puzzle-driven, investigative
- Logic puzzles
- Deduction games
Mechanics (from transcript analysis)
- App Assisted — App provides randomized information and guides the logic puzzle.
- companion app integration — App provides randomized information and guides the logic puzzle.
- Compound Scoring — Points awarded for correct theories along the way, not just final location.
- deduction — Players deduce the location of Planet X and surrounding objects using clues.
- theory-based scoring — Points awarded for correct theories along the way, not just final location.
Video topics + discussion points
Quotes (from this video)
- No patchwork, no Seven Wonders Duel, just genuinely underrated games that deserve a spot on your shelf.
- Buy this if you want something quick, portable, and full of meaningful decisions.
- That swing was massive.
- You can plan ahead because you know what your opponent might take and how it affects the board.
- The app is brilliant. It actually enhances the experience rather than feeling tacked on.
- The brilliance is in the timing and indirect interaction.
- Buy Tether if you want something that teaches in 2 minutes, but reveals depth of a repeated place.
- Buy Lacuna if you want something beautiful and tactile.
References (from this video)
- strong logic puzzle appeal
- app-assisted play reduces cheating and tracking burden
- unforgiving and tense
- requires careful rule-following
- high cognitive load
- logic puzzle with hidden information
- space-based deduction and exploration
- high-tension logic-driven deduction
Mechanics (from transcript analysis)
- deduction — logical deduction to identify Planet X
- Hidden Information — aspects of the board and hands are not fully revealed
- Logic puzzle — solving a complex spatial/logic puzzle
Video topics + discussion points
Quotes (from this video)
- Beacon Patrol is a newer title for us, it's a tile-laying game where you are working together and you are moving your boats around these islands to explore them
- you have no agency over how you're going to flip those tiles you have to place them in a single Direction
- I compare it to Dorf Romantic which is one of my favorite games and the freedom the relaxation the open feeling of being able to put those tiles and just build the best way
- I just love the logic of Search for Planet X
- the horror vibe is not my jam
- production quality everything components are amazing is gorgeous
- Darwin's Journey hits in a weird place for me where I'm on the record as being a pretty light gamer I don't particularly care for super heavy games
- it's got a few more plays in it for me
- the big boy everdale the complete collection
- it's enough that I think that's part of what holds us back to true just getting it to the table
References (from this video)
- thinky and satisfying deduction
- great for fans of logic puzzles
- heavier and slower for casual players
- deduction and hidden locations
- galactic map with pie-slice segments
- brain-burning deduction with app-assisted clues
Mechanics (from transcript analysis)
- app integration — an app provides clues and information to guide deductions
- deduction — use clues to deduce what lies in each segment of the pie map
Video topics + discussion points
Quotes (from this video)
- I absolutely love Astra
- it's very unique
- I absolutely love the theme of trying to defeat the illiterati
- this is a fantastic dice drafting game
References (from this video)
- engaging deduction with app-assisted play
- solo capable and compatible with app features
- can feel heavy for new players
- require some cognitive workload
- astronomy deduction
- outer space / planetary science
- app-enabled deductive play
Mechanics (from transcript analysis)
- App Assisted — companion app provides clues and scoring enhancements
- app integration — companion app provides clues and scoring enhancements
- deduction — players deduce the location of Planet X using clues
Video topics + discussion points
Quotes (from this video)
- "Miabi is one of my favorite polyomino games it is number 70 here on the list"
- "Seas of strife is absolutely fantastic it is such a fun game"
- "Merchants Cove I do think that if I played this one more it actually can play solo as well"
- "The Search for Planet X is my number 65"
- "Parks is my number 62"
- "Boku is my number 61"
References (from this video)
- ingenious deduction framework
- potential for heavy analysis
- planetary discovery
- space/astronomy themed deduction
- investigative logic
Mechanics (from transcript analysis)
- deduction — players deduce positions of planets via clues
Video topics + discussion points
Quotes (from this video)
- One of the greatest experiences I've ever had playing a board game ever.
- It's all about board games, but especially the people who play them.
- This is Look Back, a series that I do where I talk about games that I reviewed one year ago, 5 years ago, 10 years ago, and 20 years ago during this time frame.
References (from this video)
- engaging puzzle concept
- promotes critical thinking
- perceived as heavy or work-like by some players
Mechanics (from transcript analysis)
- deduction / deduction-driven exploration — Players deduce the location of planets using clues and reasoning.
Video topics + discussion points
Quotes (from this video)
- diversity is extremely important especially for even our older community who may not be tech savvy
- it's the atmosphere at the table
- representation really matters
- we're the products of that student
- we want to keep their brain active and engaged; brain activity is important
- three big ones is Calico, Fort and The Crew
References (from this video)
- Engaging space-themed deduction mechanics
- High-quality components and gorgeous map artwork
- Strong app integration that supports puzzle solving
- Dual-sided map for varying difficulty and replayability
- Steep learning curve for new players
- App-driven elements may be a barrier for players who prefer entirely analogue games
- Not a cooperative experience, which may limit appeal for some groups
- deductive puzzle solving with astronomy-inspired mechanics and data gathering
- Space exploration and planetary surveying in a distant solar system, seeking the elusive Planet X
- embedded procedural investigation aided by an app
Mechanics (from transcript analysis)
- app-driven play — An accompanying app handles data collection, survey results, and scoring to guide deduction.
- deduction — Players gather clues from surveys and app-driven data to deduce the location of Planet X.
- information management — Players record findings on personal pads and track evolving hypotheses throughout the game.
Video topics + discussion points
Quotes (from this video)
- This game sounds fascinating.
- I like these kind of deduction games... solve the puzzle to figure out where something is.
- the board's dual sided
- absolutely gorgeous
- I am getting more and more excited about this game as I unbox it.
- Cannot tell you how excited I am to play this one.
- the artwork is phenomenal
References (from this video)
- clever puzzle
- smooth app integration
- limited market visibility
- deduction through clues
- Galaxy/space exploration
- puzzle-driven
Mechanics (from transcript analysis)
- app-assisted clues — digital hints guide play
- deduction — reasoning to place clues
Video topics + discussion points
Quotes (from this video)
- Ticket to Ride on the other hand should be the number one on Board Game Geek.
- it's got great Lord of the Rings theming; I wish there was more actual Lord of the Rings music on the app
- I hate the fact that you have to get a full family otherwise you lose.
- it's quick simple; you can get this game done in 30 minutes.
- this is the number one board game on Board Game Geek
- Energy Empire though which is Luke Laurie's baby in this one is definitely the best of the trilogy
References (from this video)
- solo play works surprisingly well and scales to two players
- engineered tension from timing and chain reactions as correct objects are placed
- adjustable difficulties keep the game accessible while preserving challenge
- smooth gameplay flow with clear action sequencing and minimal downtime
- replayability is high due to app-driven variability and evolving logic
- intimidating for players who dislike logic puzzles
- perceived complexity can be off-putting before players get past the learning curve
- some may dislike the reliance on the app for core clues
- endgame scoring can feel punishing if you are behind and miss Planet X by a small margin
- deduction under uncertainty with app-assisted clues
- Outer space exploration; astronomers search for Planet X across a modular board of sectors
- procedural logic with evolving information delivered through an accompanying app
- Railroad Ink
- Alchemists
Mechanics (from transcript analysis)
- End-game scoring — Points are awarded based on distance of Planet X and other objects found; additional scoring via game end triggers
- Locate Planet X — Submit a guess for Planet X and its adjacent objects; correct guess yields points
- Publishing research papers — When the board rotates, players place research papers to indicate suspected objects; papers are revealed by the app later
- Research — Per-game logic rules are revealed and tracked; players deduce rules to narrow possibilities
- Survey — Choose a region and an object to query; the app reports counts privately to players
- Targeting — Direct the app to reveal what type of object sits in a specific sector
- Time/Turn economy — Actions cost movement of your observatory; the player furthest behind typically acts first
Video topics + discussion points
Quotes (from this video)
- it's a deduction game where you're trying to locate planet x
- the actions cost time
- the app will tell you how many of that object there are
- it's very addictive when you first time play
- the rules are so simple because of the app
- it's the simplest game for sure
- it's a must-have for me
- the gameplay flows really smoothly
References (from this video)
- Offers a different style of deduction
- Brain-burning and satisfying deduction puzzle
- Awkward Guess
Mechanics (from transcript analysis)
- Deduction with time-track pressure — Deduce planets’ locations using a timed action track that accelerates as players progress.
- Pattern/puzzle-solving deduction — Logical puzzle of placing astral bodies based on clues.
Video topics + discussion points
Quotes (from this video)
- I love how streamlined this game is.
- it's a drafting style game as you're trying to build up the civilization of cards
- one world worthy of all the hype
- this engine builder
- it's the crunchiness
- this is widely considered to be one of the best if not the best economic style board game of all time
- it's a joy to play
- you are destined to love it
References (from this video)
- clear rules
- quick to pick up for a deduction game
- some randomness in clue distribution
- planetary search puzzle
- space/astronomical deduction
- app-assisted deduction
- Cryptid
- Archaeologic
Mechanics (from transcript analysis)
- app-assisted — App guides clues and scoring
- deduction — Identify planetary identities from clues
Video topics + discussion points
Quotes (from this video)
- it's a really cool design and simple to play
- this is one of my go-to social deduction games
- it's simple you know doesn't take too long and still gives you like an interesting story with a lot of freedom
- it's Zen-like bag-builder
- it's a big engine builder with the mechs
- it's a very cool negotiation game
References (from this video)
- Excellent logic deduction puzzle system
- App integration is elegant and necessary
- Strong solo mode with bot opponent
- Unique app-based mechanics
- Good scaling from 1-4 players
- Somewhat multiplayer solitaire feel
- Not the most visually striking game
- Requires app comfort from players
- Came out with minimal marketing
- Solo mode not in rulebook (must find online)
- Space Exploration
- Astronomy
- Logic Puzzles
- Alchemists (comparison with theory placement mechanic)
Mechanics (from transcript analysis)
Video topics + discussion points
Quotes (from this video)
- it's a unique twist on a genre that has you know like i say i love deck building but it has been bloated with a lot of uh entries
- it's a breath of fresh air it's like oh no one's really tried this before
- thank you viewers because you kept banging on at me to play this game finally i did and you were right
- my god do i i mean i love coffee i love coco but man do i hate the stuff i have to play this game
- it's like inside out the board game as in the pixar movie which is vastly underrated
- wow for someone like me who loves like variety as the spicer life this is certainly one where you've just got so many different ways to tailor the game
- tainted grail is one of the best story world settings for any campaign game i have played forget dissent forget gloomhaven
- gameplay imperium is sound it really is a good fun deck builder it would be so much higher on this list if it was just a bit more streamlined
- this is a really streamlined game that works with six players you don't get many of those
References (from this video)
- Interesting deduction mechanics for group play
- Limited appeal for players who prefer tactile Euro mechanisms
Mechanics (from transcript analysis)
- Hidden information / deduction — Players deduce and bluff their way to victory using hidden information.
Video topics + discussion points
Quotes (from this video)
- Dominant species is a truly awful game that I really really dislike
- this is a very very light worker placement game
- the seventh continent for us
References (from this video)
- innovative deduction pace
- variable information economy
- app reliance may be disruptive for some groups
- investigative discovery in a sci-fi setting
- space-deduction using app-assisted rules
- logical, information-heavy exploration
Mechanics (from transcript analysis)
- app-assisted rules — digital component shapes information reveal
- deduction — ask questions to gather evidence and narrow space
- time-costing questions — more precise questions cost more time but yield better data
- time-management — questions cost time and affect deduction pace
Video topics + discussion points
Quotes (from this video)
- this game is poo
- it does as i said just take that edge off the randomness
- one of the best card games i've ever played
- it's almost like a eurofied Ticket to Ride
- the ambition of this game is absolutely mind-blowing
- a game that rewards repeated plays
- the board is always flux and alive
References (from this video)
- satisfying domino-style progression
- strong deduction flow and logic satisfaction
- can be challenging for new players
- may require many plays to master rule interactions
- astronomy and logic deduction
- sky-spotting/deduction puzzle about locating a hidden planet
- logic-driven discovery with a domino-effect reveal
- Hookie
- Turing Machine
Mechanics (from transcript analysis)
- deduction — players deduce location of planet X using grid/sky clues
- deduction / logic rules — players deduce location of planet X using grid/sky clues
- pattern of clues — rules constrain where meteors, gas clouds, etc., can appear
Video topics + discussion points
Quotes (from this video)
- There's a lot of games out there that I feel like you do stuff you're like, 'Ooh, I feel like you figured that out.'
- It just makes you feel clever as you build out this thing and start really cascading finishing those tasks.
- This is a game where you are going to be doing actions by putting these kind of double-sided hexom tiles into this cauldron.
References (from this video)
- Appealing to players who enjoy deduction and logic puzzles
- Solo play option is available
- Tile components provide tactile interaction and thematic flavor
- Clear stance away from Euro, dice, or cards, offering a niche appeal
- Not highly accessible to casual or family audiences
- Niche appeal may limit audience reach
- Ambiguity around publisher/designer without official data
- Astronomy, deduction, investigation
- Space exploration with clues to identify Planet X
- Investigative puzzle
- Jenga
Mechanics (from transcript analysis)
- deduction — Players infer a correct answer through logic and elimination of possibilities.
- Deduction / hidden information — Players infer a correct answer through logic and elimination of possibilities.
- Solo Play — The game supports playing solo, solving clues without other players.
- Tile components — Tiles are used as clues or markers rather than traditional placement on a board.
- tile placement — Tiles are used as clues or markers rather than traditional placement on a board.
- Timed play — A timer is used to pace the guessing process.
Video topics + discussion points
Quotes (from this video)
- Tiles, but not tile placement.
- Can you solo this game?
- Yes.
- We would solo it.
- Is it the search for planet X?
- Yes. Oh, baby.
- There you go.
- Nick likes it the most of any of us.
- Not a euro, not a mass market.
- Tile placement game, but there are tiles.
References (from this video)
- innovative rotation mechanic (sky rotates as time passes)
- strong logic-deduction appeal and theme
- can be heavy and lengthy for some groups
- logic deduction and astronomical reasoning
- Earth sky exploration to locate Planet X
- investigative deduction with rotating sky board
- Planet X (series progression)
- Lost Species
Mechanics (from transcript analysis)
- logic deduction with app-assisted hints — players deduce Planet X using logical clues and a rotating sky board.
- visual deduction / mapping — players map the sky sectors, considering rotation and time progression.
Video topics + discussion points
Quotes (from this video)
- Gen Con is my number one show of the year; the energy is like geek paradise.
- Non-stop bombardment of games and energy everywhere you turn.
- Indianapolis has embraced Gen Con to the point that even the airport has tables to play games.
- These are our people; the hobby is a shared language and vibe.
- Pax Premier Second Edition is a heavy, rewarding experience with deep political intrigue.
- The Search for Planet X uses a 360-degree sky view and rotating clues—it's a clever deduction challenge.
- Evenfall is gorgeous; the art and depth are top-notch, though it can be challenging to learn.
- Offsite publisher events can offer a more relaxed, focused environment for discussion and play.
References (from this video)
- Unique deduction gameplay
- App integration
- Engaging scientific theme
- Scientific deduction
- Astronomical exploration
- Competitive discovery
- Search for Lost Species
Mechanics (from transcript analysis)
- App-assisted gameplay — Uses an app to verify information
- deduction — Players use clues to locate Planet X
Video topics + discussion points
Quotes (from this video)
- We have ranked a lot of games as fantastic.
- Everything gives you points.