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Zen Aquarium

Zen Aquarium

Immerse yourself in the ultimate relaxing aquarium experience. Watch fish glide gracefully through a serene, ever-changing tank—no setup, no stress, just pure tranquility. Enjoy soothing visuals and ambient ASMR sounds as your aquarium comes to life effortlessly. Your peaceful escape awaits!

Released Sep 25, 2025 Developer Astro Cat Platforms Windows · Mac SimulationUnderwaterCozyRelaxingIdler
View on Steam ↗ $4.99 (US · as of 2026-09-26)

What players say

Steam review score and the most-helpful voices, which may include critical ones. Score via Steam as of 2026-09-25.

93.9%positive310 reviews
Recommended · 1 found this helpful

“if you are wishing to have a virtual soothing underwater world you are at the right place :) arrange corals/fish/environment and listening to music while creating your own private relaxing space.. Pros Beautiful Visuals. Stress-free gameplay. Relaxing background music. Cons…”

— a player, Steam review · 104 hrs played
Recommended · 1 found this helpful

“It's an aquarium. It's the perfect thing if you want to relax, get away from it all or had a hard day. Put your headphones on pick a nice background sound like gentle rain outside and take it easy with some cool fish to look at.”

— a player, Steam review · 5 hrs played
Not recommended · 5 found this helpful

“It's a lazy game. I expected to be able to customize my own aquarium and choose which fish to buy, but once you pick an aquarium, you can't change it without starting over. New fish just appear randomly over time. It's less of an idle game and more like a screensaver, except it…”

— a player, Steam review · 51 hrs played
Read more reviews ↗

Player activity

Monthly average concurrent players. Live data self-collected from the Steam API · history through 2026-08 via SteamCharts.

157all-time peak
0 50 100 2026 54 avg · Oct 2025

Achievement stats

Global completion rates across all Steam players — a data view of how far people actually get. Source: Steam official stats · as of 2026-09-26.

15achievements
26.8%median completion
13.9%rarest: Absolute limit
99.8% of players 67.9% of players 52.6% of players 27.5% of players 27.1% of players 26.9% of players 26.9% of players 26.8% of players 24.3% of players 23.8% of players 23.7% of players 23.7% of players 18.9% of players 16.5% of players 13.9% of players 99.8% 0% most earned rarest
Almost everyone has
99.8%First Tank Designer — Your first aquarium is ready for fish!
67.9%First school — Placed 10 fish in one tank. It's a start!
52.6%Bubbling life — 20 fish in one tank! The water is literally boiling with activity
Rarest badges of honor
13.9%Absolute limit — 100 fish in one tank! There's simply nowhere else to put them
16.5%Butterflyfish Collector — Your Butterflyfish set is complete! A true collector at heart.
18.9%Legendary Butterflyfish Hunter — Blue and orange butterflyfish are yours at last. A rare find for any aquarist!

Price tracking

US-region pricing (USD), sampled twice daily by our own tracker since 2026-09-26. Steam prices vary by region — always confirm your local price on Steam.

$4.99current · sampled 2026-09-26 21:12 UTC
$4.99lowest since tracking began2026-09-26
US4.99 USD
EU4.99 EUR
UK4.29 GBP
Australia7.50 AUD
Canada6.49 CAD
Japan580 JPY
Brazil16.99 BRL
China22.00 CNY

Regional prices at last sample, in local currency — Steam sets each region's price independently.

China≈$3.3 Brazil Japan Canada US Australia UK EU≈$5.7

Cheapest → most expensive, converted to USD at ECB reference rates (2026-09-25). Relative comparison only.

Latest official news

Developer announcements via the Steam news API — links go to the original posts. More across all games on the news hub.

Jun 25, 2026
Dive Into the Steam Summer Sale with 50% Off Zen Aquarium!

For a limited time, Zen Aquarium is available for 50% off, bringing the price down to just $2.49. Transform your screen into a tropical escape filled with colorful fish, vibrant underwater scenery, an

May 18, 2026
Dive Into the Ultimate Underwater Escape During Ocean Week

To celebrate a week filled with oceanic adventures, Zen Aquarium is now 45% OFF (the lowest price it’s ever been) for a limited time on Steam! ❗❗❗ Immerse yourself in a living aquatic world inspired b

Mar 19, 2026
Zen Aquarium is in the Steam Spring Sale!

Hello, fish friends! 🐠 The Steam Spring Sale is here, and Zen Aquarium is 35% off for the duration of the event. If you have been thinking about picking it up, now is a great time! ✨ March 19 to March

Dec 18, 2025
Zen Aquarium is part of the Steam Winter Sale!

Take a moment to slow down this winter ✨ There's absolutely no pressure, no management, and no rush. Just gentle motion, ambient sound, and a calm place to return to whenever you need a break. If you

Dec 16, 2025
Zen Aquarium New Update!

This update brings a clearer saltwater identity to the aquarium, with fish selected to match a single calm environment. The experience now feels smoother, more cohesive, and easier to sink into over t

Screenshots

Official Steam store screenshots — click any shot to enlarge.

Facts & details

From the Steam store record, snapshot 2026-09-25.

GenresSimulation
Player tagsSimulation · Underwater · Cozy · Relaxing · Idler · Nature · Casual · Colorful · Creature Collector · Utilities · Fishing · Singleplayer (Steam store community voting)
FeaturesSingle-player · Family Sharing
LanguagesEnglish, French, German, Japanese, Korean, Polish, Portuguese - Brazil, Portuguese - Portugal, Russian, Simplified Chinese, Spanish - Latin America, Turkish
Achievements15
Minimum system requirements (PC)

Minimum: OS: Windows 10 (64-bit) Processor: Intel Core i3-6100 or AMD Ryzen 3 1200 Memory: 4 GB RAM Graphics: NVIDIA GeForce GTX 680 or AMD Radeon HD 7970 Storage: 1 GB available space Additional Notes: Zen Aquarium does not support ultrawide resolutions (21:9, 32:9)