Under the Blue Horizon: Your Pocket Aquarium Idle Sim

8/29/2026, 10:20:09 AM

Release date: 8/9/2024

Tags: #casual #idler #simulation #relaxing #pixel-graphics #building #base-building #underwater

User Reviews

Score: 79%Mostly Positive
Review Count: 183 reviews
Fetched At: 8/29/2026, 10:20:10 AM

Reference prices

Japan

¥ 700 (JPY)

Steam JP

$5.99 (USD)

Steam

Live Store Snapshot

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Japan Price: ¥ 700
Global Price: $5.99
Price in Your Region: ¥ 700Prices as Steam lists them per country. What you are actually charged depends on your Steam account settings.Regional prices checked: 29 Aug 2026
Sale Status: Regular pricing
Price Checked At: 8/29/2026, 10:15:24 AM

Key highlight

Create and manage a vibrant pixel art aquarium in "Under the Blue Horizon," an idle simulation game where fish grow by eating shrimp and byproducts can be used to expand your underwater world. Playable alongside other ta

Who this is for

If you're looking for a relaxing escape, this game is a perfect fit. Why not cultivate your own unique aquarium between tasks?

Details

Overview

Dive into "Under the Blue Horizon," a charming idle simulation game developed by Pavdup and Chyopa, and published by DEVDUP. This title offers a uniquely relaxing experience, allowing players to create and manage their own virtual aquarium that can run discreetly on their desktop, even while multitasking with other applications. It’s a perfect blend of casual gameplay and engaging simulation.

Highlights

Create and Nurture Diverse Fish: The core gameplay revolves around breeding a wide variety of fish. These aquatic creatures grow by consuming shrimp, and observing their development and the sheer diversity of species available is a central part of the appeal.
Expand Your Underwater World: Players can transform the byproducts generated by their fish into a special currency called "Aqua." This currency is then used to expand the underwater environment and construct various structures, allowing for creative base building within your aquarium.
Relaxing Idle Gameplay: Designed to be played alongside other tasks, "Under the Blue Horizon" offers a low-stress, idle experience. You can set up your aquarium and let it run, checking in periodically to manage growth and expansion without demanding constant attention.

Who It's For

This game is ideal for players who enjoy relaxing simulation and idle games. If you appreciate pixel graphics, base building mechanics, and a low-commitment gaming experience that can run in the background, "Under the Blue Horizon" is a fantastic choice. It's also suitable for those looking for a calming escape during their workday or study sessions.

Game Info

"Under the Blue Horizon" features a delightful pixel art style and is categorized as Casual, Idler, Simulation, and Relaxing. It supports multiplayer functionality and Steam Cloud saves, ensuring your progress is always accessible. The game was released on August 9, 2024, and is available in multiple languages, including English, Japanese, and Simplified Chinese. The developers, Pavdup and Chyopa, have crafted a title that emphasizes peaceful progression and creative expression within a serene underwater setting.