How to Download ARC Aquarium

1. Click on the ARC Aquarium download button below.
2. Choose "Install" to install the game on the windows steam client.
3. Follow the on-screen prompts
4. Let it download the Full Version.
5. Once a game is downloaded, use the Windows Steam Client to play the game.

=== Download Game ====

Download for pc →

This guide describes how to use Steam Proton to play and run Windows games on your Linux computer. Some games may not work or may break because Steam Proton is still at a very early stage.

1. Activating Steam Proton for Linux:
Proton is integrated into the Steam Client with "Steam Play." To activate proton, go into your steam client and click on Steam in the upper right corner. Then click on settings to open a new window. From here, click on the Steam Play button at the bottom of the panel. Click "Enable Steam Play for Supported Titles."

Alternatively: Go to Steam > Settings > Steam Play and turn on the "Enable Steam Play for Supported Titles" option.

Valve has tested and fixed some Steam titles and you will now be able to play most of them. However, if you want to go further and play titles that even Valve hasn't tested, toggle the "Enable Steam Play for all titles" option.

2. Choose a version
You should use the Steam Proton version recommended by Steam: 3.7-8. This is the most stable version of Steam Proton at the moment.

3. Restart your Steam
After you have successfully activated Steam Proton, click "OK" and Steam will ask you to restart it for the changes to take effect. Restart it. Your computer will now play all of steam's whitelisted games seamlessly.

4. Launch Stardew Valley on Linux:
Before you can use Steam Proton, you must first download the Stardew Valley Windows game from Steam. When you download Stardew Valley for the first time, you will notice that the download size is slightly larger than the size of the game.
This happens because Steam will download your chosen Steam Proton version with this game as well. After the download is complete, simply click the "Play" button.

Windows Pc Requirements

Minimum:

• OS: Windows 10
  
• Processor: Intel Core i3 or equivalent
  
• Memory: 4 GB RAM
  
• Graphics: Integrated Graphics (Intel HD Graphics 4000 or equivalent / DirectX 11 compatible)
  
• DirectX: Version 11
  
• Network: Broadband Internet connection
  
• Storage: 500 MB available space
  
• Sound Card: Any DirectX compatible sound card
  
• VR Support: None
  
• Additional Notes: A stable internet connection is recommended but not required. The game supports offline gameplay and saves progress locally.

Recommended:

• OS: Windows 10 (64-bit) or later
  
• Processor: Intel Core i5 or AMD equivalent
  
• Memory: 8 GB RAM
  
• Graphics: Dedicated graphics card (NVIDIA GeForce GTX 750 or AMD Radeon R7 260X or better)
  
• DirectX: Version 11
  
• Network: Broadband Internet connection
  
• Storage: 1 GB available space
  
• Sound Card: Any DirectX compatible sound card
  
• VR Support: None
  
• Additional Notes: For optimal performance, especially in fullscreen mode at higher resolutions, a dedicated graphics card is recommended. The game will run smoothly on most modern integrated graphics as well.

Linux Requirements

No minimum requirements!!
No maximum requirements!!

Mac Requirements

No minimum requirements!!
No maximum requirements!!

Build and manage your own aquarium by collecting fish, earning money, and unlocking decorations. Feed your fish, clean the tank, and enjoy relaxing idle progression in this cozy 2D aquarium simulation.

Create, customize, and manage your own aquarium in a relaxing 2D idle simulation.

ARC Aquarium is a cozy aquarium management game where you collect fish, decorate your tank, and watch your aquarium grow over time — even while you're away. Feed your fish, clean the tank, unlock new content, and enjoy calm progression at your own pace.

Whether you play actively or check in from time to time, your aquarium is always alive.

🐠 Collect and Grow Your Fish

• Collect 85 unique fish species, each with its own visuals, price, and level requirement

• Feed your fish to help them gain EXP and grow visually

• Fish continue growing over time with idle and offline progression

• Watch natural swimming animations, tail movements, and bubble effects

🪸 Decorate Your Aquarium

• Unlock and place 86 different decorations

• Move, resize, and sell decorations freely

• Customize the depth and layout with smooth layering and visual sorting

• Change the look of your aquarium with 9 different backgrounds

📈 Relaxing Progression System

• Level up by earning EXP and unlock new fish, decorations, and backgrounds

• Manage tank capacity as you progress

• Earn money by growing and selling fish or decorations

• Simple economy designed for calm, stress-free gameplay

🧼 Keep Your Aquarium Clean

• Dirt appears over time, even while the game is closed

• Click to clean dirt and earn bonus EXP

• Adds a light interactive element without breaking the relaxing flow

🌙 Idle & Offline Friendly

• Your aquarium continues progressing while you're offline

• Fish gain EXP automatically over time

• Dirt appears based on real elapsed time

• Come back anytime and see how your aquarium has grown

🌍 Global-Friendly Experience

• Supports 23 languages, fully localized UI

• Automatic save system — your progress is always safe

• Simple controls and accessible gameplay for all ages

🎮 Designed to Be Calm

ARC Aquarium is designed to be a peaceful experience.

No time pressure, no failure states — just gentle progression, soothing visuals, and the joy of watching your aquarium come to life.

Play actively or let it run in the background.

Your aquarium grows at your pace.

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