Bubble Reef: Aquarium Game

Rie Fuwa

Contains adsIn-app purchases

About this game

Your reef is waiting — and it's alive.

Bubble Reef is a relaxing aquarium fish game where a living, breathing underwater world grows around you. Whether you check in for five minutes or settle in for the evening, your tank keeps thriving: fish glide in lazy schools, the water shimmers, and the lights dim naturally when night falls on your device. There's always something beautiful waiting when you return.

★ COLLECT 50 SPECIES ACROSS 5 RARITY TIERS ★

Bubble Reef is a true fish collection game built for explorers and completionists alike. Hunt through five rarity tiers — Common, Uncommon, Rare, Epic, and Legendary — and watch your fish encyclopedia fill up one stunning species at a time. Each fish has its own personality, behaviour, and ideal habitat. Discovering a Legendary fish for the first time never gets old.

★ REAL AQUARIUM CARE THAT ACTUALLY MATTERS ★

This is an aquarium management game that takes its fish seriously. Monitor water quality and oxygen levels, watch for disease, and apply the right treatment at the right time. Fish that are happy show it — they school together, swim actively, and respond when you interact with them. Neglect the tank, and they'll let you know that too. Real fish care, gentle stakes.

★ IDLE AQUARIUM — PROGRESS WHILE YOU SLEEP ★

Bubble Reef is an idle fish game built around your real life. Your automatic fish feeder keeps everyone fed, your cleaning snail roams the glass, and your bottom robot sweeps the sand floor — all while the app is closed. Come back to a healthy, thriving reef no matter how long you've been away. This is the offline fish game that works as hard as you do.

★ DAY & NIGHT CYCLE SYNCED TO YOUR CLOCK ★

As evening falls in the real world, your aquarium gradually darkens. Moonlight filters through the water, nocturnal species grow more active, and the whole reef shifts into a quieter, more mysterious mood. This day-night fish game experience syncs to your device clock automatically — a small detail that makes everything feel genuinely alive.

★ DECORATE YOUR PERFECT UNDERWATER WORLD ★

Aquarium decoration in Bubble Reef is completely freeform. Place plants, rocks, ornaments, and equipment anywhere on the sandy floor — no grid, no locked slots. Build a cozy cave for your shy species, a wide clearing for schooling fish, or a lush planted corner that looks straight out of a nature documentary. Every tank is unique, and yours should be too.

★ DAILY REWARDS & SPIN WHEEL ★

Collect your daily gift of gold or XP every time you log in, then take a free spin on the reward wheel. More spins are available through optional rewarded videos — never a requirement, always a bonus. Small daily rituals that keep your reef growing.

★ CALM, UNHURRIED, ALWAYS RELAXING ★

Bubble Reef is a stress relief game that respects your time. No energy bars. No countdown timers. No pressure. Just a cozy aquarium game you can pick up and put down whenever you like. Watch a school of neon tetras dart past a rock. Listen to the gentle hum of the filter. Give your clownfish a little tap. This is what a relaxing fish game feels like.

Build something beautiful — one fish, one decoration, one discovery at a time.
Download Bubble Reef and start your reef today.

What’s new

Welcome to our aquarium game!