Shallow Sea: Rare Fish Mini-Expansion
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The FroGames Card
Choose a hammerhead shark. You place it where the card says. And from that moment on, every tile you add has to contend with it: too close and the wildlife flees, too far and you lose points. You've just turned the puzzle into a three-dimensional brain teaser.
WHAT IT'S ABOUT
Four threatened creatures that redesign your coral reef
This mini-expansion for Shallow Sea brings four rare or vulnerable marine species to the table: the hammerhead shark, the Maori Wrasse, the sawfish, and the whale shark. Designed by Yeom.C.W and illustrated by Sophia Kang, the expansion adds 4 fish meeples and 3 new Ecosystem cards that utilize them. It's a way for Bad Comet to thank the players who supported the project, but also a small reminder about marine conservation.
The 3 Ecosystem cards included work differently from those in the base game: they indicate where to place the rare fish on your personal grid and introduce new spatial constraints. Some fish scare away surrounding wildlife (no marine life gets close to a shark), while others require tiles to be placed lower than their position. Shallow Sea's layered puzzle gains an unprecedented dimension: the forced placement of a creature that becomes the focal point around which to build.
What they say abroad
"Discover that no sea life is eager to venture near a fearsome shark"
Discover that no sea life is eager to venture near a fearsome shark
— Bad Comet
This mini-expansion does what every good expansion should: it forces you to rethink moves you took for granted. The rare fish isn't just a cute meeple; it's a constraint that redesigns the grid. First read, July 2026.
— FroGames
Shallow Sea: Rare Fish Mini-Expansion
The base game has an official solo mode based on scenarios with scoring thresholds. The Rare Fish expansion integrates perfectly: choose an ecosystem card, place the rare fish, and solve the spatial puzzle by yourself. The experience is complete, but obviously lacks the tension of competitive drafting in the central market.
FrogScore · FroGames editorial rating · first read: based on rules and official presentation, updated with first playsThe four creatures
What you'll find in the box
Hammerhead Shark
Meeple of one of the reef's most iconic species. Its unmistakable shape occupies space and creates exclusion zones for smaller wildlife.
Whale Shark
The largest fish in the world, vulnerable to extinction. On the grid, it becomes a visual and strategic reference point around which to build.
Sawfish
Sawfish, critically endangered in many areas. Its serrated rostrum makes it recognizable: on the grid, it creates vertical placement constraints.
Maori Wrasse
Giant wrasse endemic to the Great Barrier Reef. Protected species: the game forces you to give it space, just as it should be in nature.
Recommended sleeves 3 cards in 1 size ▼
If you play often, we recommend protecting your cards with clear sleeves to make them last a long time.
| Size | Quantity |
|---|---|
| 63 × 88 mm | 3 |
| Total cards | 3 |
🎲How to playThe rules in four steps▼
How to play
Setup and gameplay
The mini-expansion adds a step to setup and new placement constraints. The turn flow remains identical to Shallow Sea.
During setup, draw one of the 3 ecosystem cards included in the expansion. The card tells you which rare fish to use and where to place it on the grid. Each player places their rare fish meeple in the indicated position.
The ecosystem card describes special rules related to the rare fish. Some examples: no Sealife tiles can be adjacent to the fish (exclusion zone), or all tiles must be placed in rows below the fish (depth constraint).
The turn works like in the base game: you draft a tile + fish pair from the central market, place it on the grid, activate any coral flips. But now each placement must respect the ecosystem card's constraints, making the puzzle more complex.
At the end of the game, in addition to the standard Shallow Sea points, you count the bonus points from the ecosystem card. These reward specific patterns around the rare fish, variety of creatures, and adherence to constrained zones. The rare fish becomes a strategic multiplier.
⏱️Your first gameThe chronicle, moment by moment▼
A game in five moments
What happens at the table
Not the rules. The experience.
You draw the ecosystem card
Read the card: it tells you which rare fish to use and where to place it on the grid. You place it immediately, even before you start drafting tiles. From this moment on, your barrier has a fixed point around which everything else must revolve.
Discover the spatial constraints
The ecosystem card explains the rules: some tiles must stay away from the rare fish (because it's scary), others must be placed lower (due to depth issues). Read it twice because these constraints change the geometry of the puzzle.
You start building around the fish
Every tile you draw has to contend with the rare fish's position. That jellyfish you would have placed in the top right? Too close to the shark, skip. That perfect coral? Doesn't meet the depth constraint. You're playing Tetris with ecological rules.
You find the unexpected combo
Mid-game, you realize the rare fish isn't just an obstacle: the ecosystem card gives you bonus points if you can build specific patterns around it. That dead zone near the shark? You can use it to concentrate fauna on the other side and create vertical combos.
You count the ecosystem card points
End of game. In addition to the base game points, you count the bonus points from the expansion card: points for creature variety, for patterns around the rare fish, for respected zones. You discover that forced move on turn 6 cost you 8 points. You immediately replay with another card.
🐸Things to know beforehandThree honest things, from friends▼
Things to know beforehand
Three honest things
Base game required
This is a mini-expansion, not standalone. You cannot play without Shallow Sea: you need the ocean grid, coral/sealife tiles, standard fish meeples, the central market. Consider the bundle price if you don't already own the base game.
Limited BGG data available
The game was released in 2025, has only 105 votes on BoardGameGeek, and no reviews from major international outlets. The weight and longevity are cautious estimates. It's better to wait a few months if you want certainty on balancing and actual replayability.
Asymmetrical complexity
The additional rules are very few (read card, place fish, respect constraints), but the mental puzzle becomes considerably more complex. If you play Shallow Sea in a relaxed mode, the Rare Fish expansion forces you to plan 2-3 moves ahead. It's no longer a zen filler.
🏆Victory and defeatWhat the ending rewards▼
How it ends
Endgame conditions and scoring
The game ends exactly as in the base game of Shallow Sea. Rare fish add scoring layers, not different victory conditions.
Endgame conditions
- The game ends when you have filled the ocean grid until only 4 empty spaces remain (standard Shallow Sea rule)
- At that point, you count the points from completed coral tiles, sealife tiles, standard ecosystem cards
- Add the bonus points from the Rare Fish ecosystem card: patterns around the rare fish, variety of creatures, adherence to constrained zones
What costs you points
- Placing tiles that violate the ecosystem card's constraints (exclusion zone, depth constraint) prevents you from gaining the corresponding bonuses
- Ignoring the rare fish and building the grid without strategically utilizing it: you lose the bonus points from the expansion card
- Focusing too much on the rare fish's constraints and neglecting the basic Shallow Sea combos: you risk losing anyway because most points still come from corals and sealife
The beauty of this mini-expansion is that it doesn't revolutionize Shallow Sea, it bends it. Three cards, four fish, a puzzle that suddenly has constraints you hadn't anticipated. And a silent reminder that those fish, outside the game, are truly disappearing.
💬Frequently asked questionsQuick answers before checkout▼
Frequently asked questions
FAQ about Shallow Sea: Rare Fish Mini-Expansion
Can I play Rare Fish Mini-Expansion without the base game?
No. This is a mini-expansion for Shallow Sea. You need the complete base game: ocean grid, coral and sealife tiles, standard fish meeples, draft bags, basic ecosystem cards. Rare Fish only adds 4 special meeples and 3 new ecosystem cards that integrate into the existing system.
How do the rare fish's spatial constraints work?
Each ecosystem card in the expansion describes specific rules. For example: exclusion zone (no sealife tile can be adjacent to the rare fish, because it's scary), or depth constraint (all tiles must be placed in rows below the fish's position). Read the active card carefully, because the constraints change how you build the grid.
What mechanics does Shallow Sea: Rare Fish Mini-Expansion use?
The expansion inherits the base game mechanics: tile placement, pattern building, open drafting, set collection. It adds asymmetrical grid coverage constraints linked to the fixed position of the rare fish. Setup includes variable set-up (3 different ecosystem cards). Compatible with the official Shallow Sea solitaire mode.
Is the expansion balanced? Is it worth the money?
Honestly: the game only has 105 votes on BGG, no reviews from major international outlets, and was released only a few months ago. We don't have enough data to say whether the balancing holds up long-term or if the 3 ecosystem cards offer enough variety. It's a free mini-expansion for Kickstarter backers, so the perceived value depends on how much you pay: if you find it for 10-12 euros standalone, it's a nice extra puzzle. If it costs as much as a full expansion, wait for more in-depth reviews.
Is it available in Italian?
No. The edition sold on FroGames is in English. However, the text on the cards is minimal (description of spatial constraints on the 3 ecosystem cards), and the base game of Shallow Sea has low language dependency. If you know the rules of the base game, you can play the expansion by translating the 3 ecosystem cards on the fly. There are currently no official Italian editions or verified fan translations.
The people behind the game
Who invented it, who designed it, who publishes it — and what else they've done.
Shallow Sea: Rare Fish Mini-Expansion is a mini-expansion for the puzzle game by Bad Comet, designed by Yeom.C.W. It includes 4 rare fish meeples (hammerhead shark, whale shark, sawfish, Maori Wrasse) and 3 new ecosystem cards that introduce new spatial constraints. For 1-4 players, ages 14+, duration 30-45 minutes. Mechanics include tile placement, pattern building, and open drafting, with the addition of exclusion zones and depth constraints that complicate the layered puzzle of the base game. Compatible with the official solitaire mode. Available on FroGames.it.
Frequently Asked Questions
The answers you're looking for, no beating around the bush.
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