Goldfish Days: Zen Aquarium

■ What is Goldfish Days?

A relaxing raising game where you welcome goldfish into your tank and watch them grow. Feed them, pet them, and help them thrive. Your goldfish will keep swimming happily even while you're away.

■ Many Kinds of Goldfish

Wakin, Black Moor, Ranchu, Comet, and more — 16 breeds to discover. Each goldfish has its own personality, making every one unique.

■ Design Goldfish

Turn your favorite photos and illustrations into goldfish skins. Watch your original goldfish swim in the tank.

■ Goldfish Friendships

Goldfish that bond with each other will swim side by side, and may even produce a "Friendship Egg." Their appearance and personality traits are passed down to the next generation.

■ Build Your Own Aquarium

Customize your tank with plants, backgrounds, sand, and lighting. Create your perfect aquarium with fireworks, seasonal scenes, and more.

■ Daily Wishes

Fulfill your goldfish's daily wishes to earn rewards.

■ Perfect For You If...

・ You need a moment of calm ・ You love fish but can't keep real ones ・ You enjoy goldfish and aquariums ・ You prefer slow, relaxing games

■ Free to play with no paywalls.