Fishful Thinking Aquarium Sim

🐠 Build a living aquarium, then keep it alive.

Fishful Thinking is a relaxing aquarium simulator with real stakes. Stock your fish tank, feed your fish, watch them grow, and turn a bare glass box into a reef you actually want to stare at. Then something with teeth swims in, and you find out this is a game and not a screensaver. 🦈

📈 GROW YOUR FISH, NOT JUST YOUR COIN COUNTER
Every fish is an individual. Feed it and it earns experience, matures through Juvenile, Adult, Prime and Elder, and visibly gets bigger on screen at every step. A grown fish earns more coins per second, so the tank you tend is the tank that pays. 💰 Come back tomorrow and your idle aquarium has been earning while you were away.

🐟 30 SPECIES TO COLLECT and COUNTING
Guppies, neon tetras, koi, angelfish, discus, bettas, plecos, arowanas and more, each one a hand-made 3D model that swims with its own personality. Bottom feeders graze the sand. Schooling fish drift together. Big showpiece fish own the middle of the tank.

🧬 BREED RARE FISH YOU CANNOT BUY
Install the Breeding Lab, pair two grown fish, and wait. Six species exist only as breeding results, including the Crown Betta, the Opal Koi and the Royal Arowana. ✨ Eight inheritable traits and a rare morph chance mean two runs of the same recipe do not give you the same fish.

⚔️ DEFEND THE TANK
Predator waves come for your collection, and they can take a fish permanently. Position guardian fish, upgrade your equipment, and decide what you are willing to risk. Nothing about this aquarium game is on rails.

🧩 PUZZLE ROUNDS IN THE TANK
Wild fish turn up at the glass and offer a match 3 round for the chance to adopt them. Clear the board and the fish is yours. Miss the window and it swims off.

🌿 DECORATE EVERY INCH
More than 33 pieces of decor, 15 aquatic plants that grow through four stages of their own, five tank themes and four biomes. Shipwrecks, coral, driftwood, lighthouses, glowing mushrooms. 🏰 Plants need light, fish need clean water, and both need you.

🗺️ RUN SIX TANKS AT ONCE
Unlock new tanks, give each one its own theme and its own residents, and switch between them from the tank map. Sell, rehome and rebalance across your whole aquarium at any time.

💧 KEEP THE WATER RIGHT
Oxygen, cleanliness and temperature all drift, and sick fish stop earning. 12 pieces of equipment let you fix that: filters, heaters, aerators, feeders and more. This is fish tank management, not a fish tank wallpaper.

🏆 THE LONG GAME
60 achievements, rotating daily quests, 8 animal companions, an 18 node gene tree, and the Ocean release, where you let a truly great fish go and keep its genes forever. 🌊

📱 PLAYS THE WAY YOU DO
Play in short bursts or long sessions. Runs offline, so it works on a plane or a bad signal. ☁️ Cloud save through Google Play Games carries your aquarium between devices.

🚫 No pressure, no timers pushing you around, no ads. Just a tank, a lot of fish, and a slowly growing sense that you are quite good at this.

🐡 Fishful Thinking. An aquarium tycoon, an idle fish game, a breeding sim and a puzzle game sharing one very well decorated tank.