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Build and manage a cozy underwater sandbox aquarium run by cats. Discover fantasy sea creatures, research upgrades, send expeditions, and balance fish, staff, and visitor needs to become the world’s top aquarium.
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Mio Aquaria is a cozy sandbox aquarium management game set in a whimsical world of water.
Build your aquarium from nothing, care for fantasy aquatic creatures from across the world, and lead a team of cat staff as you rise through the ranks to become the world’s greatest aquarium.
Design freely, explore the depths, and solve the core challenge of Mio Aquaria:
balancing the needs of aquatic creatures and cats to create a thriving, attractive aquarium.
Create your aquarium your way using sandbox-style construction.
Build spaces, place facilities, and design tanks that balance water quality, temperature, and creature compatibility.
Hosting a diverse mix of aquatic creatures increases your aquarium’s attractiveness — but only if their needs are met.
Explore the world to discover new resources, materials, and new inhabitants for your tanks.
The creatures of Mio Aquaria are inspired by real aquatic life, but reimagined as fantasy beings with unique traits and requirements.
Some aquatic creatures can only be unlocked through exploration or research.
Your aquarium is run entirely by cats — staff and visitors alike.
Staff cats need fair pay and comfortable working conditions
Visitor cats come to see their favorite creatures, but also expect food, drinks, rest, leisure, and shopping
Ignore their needs, and strikes or reputation loss may follow
Keeping cats happy is just as important as keeping aquatic creatures healthy.
Research new policies and perks to improve your aquarium’s efficiency and appeal.
Unlock new aquatic creatures and gameplay mechanics
Increase visitor capacity, tips, and inventory space
Improve staff effectiveness and aquarium operations
Multiple resources shape your strategy, including Coins, Materials, Research Points, and Hearts earned by satisfying visitors.
Take part in regular aquarium contests and compete against rival aquariums.
Earn reputation, climb the global rankings, and challenge the industry giant Star V. Co.
To truly complete your journey, you’ll need to discover and host a legendary creature — the ultimate test of your aquarium mastery.
The demo lets you experience the opening chapter of Mio Aquaria and get a feel for its core systems and charm.
Progress up to Reputation Level 5, covering Chapter 1 of the story
Explore early gameplay systems, aquatic creatures, and aquarium management
Save data may carry over to the full game, but compatibility is not guaranteed as systems and content may change during development
Weather conditions are disabled
The demo represents only a portion of the full experience, with many creatures, facilities, mechanics, and story content awaiting in the complete game.
