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My Joyful Aquarium

My Joyful Aquarium is a relaxing game where you build your dream fish tank. Take good care of your fish’s comfort, upgrade their environment, and explore thousands of breeding possibilities. With offline progression, your aquatic world thrives even when you’re away! Ready to dive in?

Steam Page
Developer
Error 300
Publisher
Error 300, Gamersky Games
Release
September 16, 2025
320 days ago
Steam Reviews
Positive32 reviews93.8%

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Notes
Latest Contributor: IGF TeamEdit notes
Updated: Jul 14, 2026Developer scaleThe operating scale of the game's developer.
Updated: Jul 14, 2026Publisher scaleThe operating scale of the game's publisher.
A separate publisher is listed without a proven bounded regional or service-only role.
Search Google: Is My Joyful Aquarium self-published or published by Error 300 and Gamersky Games?Publisher statusHow the game's publishing relationship is classified.
Search Google: How is My Joyful Aquarium and Error 300 and Gamersky Games funded?FundingThe known source of funding behind the game.
Search Google: Who controls the creative direction and IP for My Joyful Aquarium and Error 300?Creative controlWho appears to retain creative control of the game.
Updated: Jul 14, 2026Release statusWhether and how the game has been released.
The title released with a separate publisher relationship.

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About the Game

Have you ever dreamed of building your own underwater world bursting with colorful fish, beautiful decor, and a personal touch that’s uniquely yours? My Joyful Aquarium lets you bring that dream to life... and beyond! It's time to let your creativity go wild and explore nearly endless possibilities.

Pick your favorite fish eggs, drop them into your aquarium, and wait for your new aquatic friends to emerge. Make sure your little fish has everything it needs to thrive and grow into its adult version. Well done, you've just discovered your very first species... only thousands more to go!

Make your aquarium truly your own! With a wide variety of decorations, plants, boosters, and backgrounds, you can build a beautiful, one of a kind underwater world - just perfect for your little fish pets. Will you manage to make them feel at home?

Place your chosen fish in special breeding tanks to discover completely new species. Experiment with endless combinations and new pairings to uncover even more exciting possibilities. Remember - the happier your fish are, the easier it is to breed them.

Your aquarium keeps growing even while you're away, so drop by whenever you feel like it. Admire your specimens in the fish atlas, collect and spend joy points, plan the future of your tank and keep your underwater adventure flowing!

  • meet the fish requirements to generate joy

  • use joy to breed more fish

  • discover unique aquarium conditions - water temperature, salt and light levels

  • discover thousands of fish combinations

  • add decorations and customize the looks

  • no need to keep the game open, your fish will thrive even while you're offline!

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