Zen Aquarium: Your Serene Underwater Desktop Companion

8/17/2026, 12:15:40 AM

Release date: 9/25/2025

Tags: #simulation #underwater #cozy #relaxing #idler #nature #casual #colorful

User Reviews

Score: 95%Very Positive
Review Count: 304 reviews
Fetched At: 8/17/2026, 12:15:41 AM

Live Store Snapshot

Body text may reflect the state at publication time. For the latest sale, price, and review changes, prioritize the live price panel, review panel, and the Steam store listing.

Japan Price: ¥ 580
Global Price: $4.99
Sale Status: Regular pricing
Price Checked At: 8/17/2026, 12:15:38 AM

Key highlight

Zen Aquarium is a relaxing idle simulation game by Astro Cat, released September 25, 2025. It features an evolving underwater world with new fish spawning regularly, offering a serene desktop companion experience.

Who this is for

For those seeking a moment of peace and beauty, Zen Aquarium offers a tranquil escape into an ever-evolving underwater world. It's the perfect, low-stress way to bring a touch of serene nature to your desktop.

🖥️ Hardware Guide for Comfortable Play

Based on the game's recommended specs, showing a comfortable performance target and example parts (PassMark reference)

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CPU

Game's recommended spec

Intel Core i5-8400 or AMD Ryzen 5 2600

Comfortable play target

6,913 pts(~130% above spec of 5,318 pts)

Parts near this range

Intel Core i3-8350K @ 4.00GHz6,923 pts Intel Core i7-6820EQ @ 2.80GHz6,902 pts Intel Core i7-980 @ 3.33GHz6,886 pts

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GPU

Game's recommended spec

NVIDIA GeForce GTX 1650 or AMD Radeon RX 570 (4GB VRAM)

Comfortable play target

10,228 pts(~130% above spec of 7,868 pts)

Parts near this range

Details

Overview

Step into a world of serene underwater beauty with Zen Aquarium, the ultimate idle fish tank experience. Inspired by classic aquarium screensavers, this simulation game offers pure visual enjoyment without complex setups or management stress. Watch a thriving aquatic world unfold before your eyes, making it a perfect companion for ASMR lovers, chill gamers, and anyone seeking a peaceful, living desktop presence.

Highlights

Evolving Aquatic Life: New fish gracefully spawn and swim at regular intervals, creating an ever-changing, harmonious scene.
Relaxing Simulation: Enjoy a tranquil underwater world with simple, unique aquarium setups and a variety of mesmerizing fish species.
Idle Experience: Designed as a peaceful, living desktop companion, requiring no active management.

Who It's For

Zen Aquarium is ideal for players who appreciate relaxing simulation games, enjoy nature-themed experiences, and are looking for a casual, low-stress way to enhance their desktop. It's particularly suited for those who find beauty in the slow, natural progression of life and enjoy ASMR-like visual stimuli.

Game Info

Developed and published by Astro Cat, Zen Aquarium is a single-player simulation experience released on September 25, 2025. It supports a wide range of languages, including English, Japanese, and Simplified Chinese. Please note that the game does not support ultrawide resolutions (21:9, 32:9).