Four moments
Four moments to open.
Every round, what's inside the barrel grows. Open early for a sure thing, or wait for more. But a barrel left past its Peak falls into Rot.
Fresh1 ptJust brewed. A safe, early pick.
Ripe4 ptsGrown just right. Solid points.
Peak7 ptsThe perfect moment. Best value.
Rot0 ptsLost to itself. Usually a loss.
Here's a natto barrel. It's yours.
Press Wait to pass a round. Open when the moment's right.
- Round 1
- Right nowFresh1 pt
Turns Ripe next round
Round 1. Fresh. Opening now scores 1.
One match
Brew. Wait. Open.
Five barrels, three actions a turn. Brew spirits from ingredients and starters, keep an eye on your rival's barrels, and read when to open.
Brew
Call a spirit into a barrel.
Combine ingredient and starter cards from your hand. Which spirit you call decides how it grows — and how much it scores.
Wait
Each round, the timing moves.
Barrels show what's left, like "1 round to Rot". Wait or open? Factor in your rival's tricks, too.
Open
Open at the perfect moment.
Check a barrel's four stages and points, then open it. Clear a stage's goal and it's recorded, win or lose.
All screens are from the Android playtest build, in Japanese.
Rot is not the end
Rot isn'tthe end.
A rotten spirit goes blank-eyed, pulled by black threads, its will gone. Usually it scores nothing. But with the right cards, Rot becomes sabotage — or your trump card.
Black Koji Miso
Still scores 3 when rotten — and when it rots, it pushes every other barrel forward.
Lure of Rot
A sabotage card that tips your rival's Peak barrel into Rot. A Wooden Lid stops it.
Ways to play
Brew on your own, as long as you like.
We're building solo play first, so there's plenty to do without ever facing another player.
5 chapters · 20 stagesStory蔵開きLight the old brewery again. Learn to read Fresh, Ripe, Peak and Rot as the story unfolds.
3 regions × 3 difficultiesJourney巡蔵The rice village, the misty forest, the harbor. Pick your road and take on each brewery's keeper. Rivals and goals change every run.
30 puzzlesBrew Puzzles詰め醸Fixed boards, a few moves, one best answer. From "Your first Peak" onward.
CPU · 3 levelsTest Brew試し醸しTry a deck the moment you build it. Rework your 20 main cards and 5 spirits as often as you like.
100 cards
100 cards. 40 spirits.
Natto, miso, cheese, kimchi, funazushi — fermented foods from around the world, each drawn at every stage of its timing. Switch the stage and watch them change.
- 100 cards
- Spirits
- 40
- Ingredients
- 20
- Starters
- 10
- Brewery work
- 20
- Sabotage
- 10
- Natto
Hikiwari Natto
Black Bean Natto
Barley Natto
Tempeh
Rice Miso
Barley Miso
Bean Miso
White Miso
Black Koji Miso
Soy Sauce
Tamari
Shio Koji
Shoyu Koji
Amazake
Yogurt
Kefir
Skyr
Sour Cream
Cultured Butter- R
Mozzarella - R
Camembert - R
Cheddar - R
Blue Cheese - R
Parmesan - R
Bread - R
Sourdough - R
Green Olives - R
Sauerkraut - R
Kimchi - R
Nukazuke - R
Suguki - R
Shibazuke - R
Takana-zuke - R
Douchi - R
Fermented Tofu - R
Kusaya - R
Heshiko - R
Funazushi - R
Fermented Tea
Ingredients, starters, work and sabotage
Soybeans
Rice
Milk
Cabbage
Mackerel
Natto Starter
Rice Koji
Blue Mold
Wooden Lid
Turn the Mash
Lure of Rot
Black Beans
Your first spirit
Your first SSR is yours to choose.
As a welcome gift, you pick one SSR spirit. After that, you collect cards from the Grand Brew with Kura Seals you earn by playing.
- Pick your SSR from the candidates — no lottery
- Build a suggested deck around it right away
- Collect cards by playing
Development
Still brewing.
We're polishing the game in an Android playtest build, aiming for release on both iOS and Android. We'll share dates and pricing once they're set.
- 2026.10Official title set: KAMOSUBI (かもすび)
- 2026.10Android playtest covers story, journey, puzzles, card library and deck building
- NextPlanned release on iOS and Android
- Contact
- studio.gennai1@gmail.com
- Developer
- STUDIO-GENNAI
Screens and numbers are from development and may change at release.