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Watch trailer on Steam ↗Window Aquarista
LunarianDev · Published by LunarianDev
Positive — 100% positive (11 reviews) · 11 achievements
Last updated 10 Oct 2026
Create your dream aquariums while you do other things in this relaxing idle game that sits on the bottom of your screen. Unlock new fish and watch them thrive with your help. All at your own pace.
£4.99
Lowest price we've ever recorded
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Price history
Simulation, Casual · 2026 · More under £5 games
Manage your underwater world in Window Aquarista, a 2026 casual simulation by LunarianDev. Watch new fish species flourish while you focus on other tasks, all through a relaxing idle game that keeps your aquarium thriving at your own pace.
About this game
Window Aquarista is a chill idle game about building and keeping your own aquariums. All while focusing on other tasks as the game sits on the bottom of your screen!
Visit the multiple fishing areas to unlock new species for your aquarium.
Catch over 60 differen't types of fish!
Hatch fish from eggs.
Your fish start as eggs and hatch after some time. Be patient with them!
Your fish grow while you do other things.
Hatching them is only the beginning of their journey.
Unlock over 60 different types of fish!
Sell your fish to build your fortune.
Hatch them, raise them, sell them, repeat.
Keep your fish fed to keep them happy!
Feed your fish from time to time to keep them healthy.
Keep it clean!
Algae may take over an unwatched tank, but you have the tools to restore it to its full glory!
Take a look at the growing catalogue of decorations and create your dream aquarium.
The game sits at the bottom of your screen, in a non-intrusive manner.
Work, watch, play, or do whatever you want while your fish live in the bottom of your screen!
Multi task without interferences.
Something requires your full attention? Quickly set the game out of view, while still running!
System Requirements
Will my PC run this? →Minimum
- OS: Windows 10/11
- Processor: Intel Core i5-2500 or equivalent
- Memory: 8 GB RAM
- Graphics: NVIDIA GTX 660 / AMD HD 7850
- DirectX: Version 11
- Storage: 228 MB available space
Supported Languages
Latest news
Patch NotesOfficial
Patch Notes 1.1.4
Zoom option added to make the game bigger or smaller.Options menu adjustments.Minor UI visual tweaks.Corrected a transparency issue with some decorations.Corrected issues with fishing in ultrawide resolutions.Read full article on Community Announcements (Lunarian Dev)Patch NotesOfficial
Patch Notes 1.1.0
Tank overview has been completely reworked. You can now check your individual tanks with a simple and fast menu where you can easily manage them.Fixed problems with the auto cleaner add-on having to be reset to work, not cleaning when it should, and not deactivating when pressing the toggle.Fishing rarity system has been modified to avoid long streaks with no new unlocks.Disabled the stop fishing button during the initial fishing session countdown to avoid unwanted behaviors.Fixed a bug that was causing decorations to not save their rotation.Fixed a bug that impeded the game from maximizing when clicking the close game button.Level Up prompt will now be invisible if your game is minimized.Late game performance has been optimized.Read full article on Community Announcements (Lunarian Dev)Patch NotesOfficial
Patch Notes 1.0.30
Sand floors visuals have been improved. Fixed a bug that made tank health not decrease. Raised fishing area prices. Lowered auto sell tank add-on rate of sales. Raised tank prices. Fixed minor visual bugs. Prevented multiple clicks on load slots, which could potentially cause save file corruption.Read full article on Community Announcements (Lunarian Dev)Patch NotesOfficial
Patch Notes 1.0.22
-Added color coding in the fish store indicating the rarity of each fish species.-Fixed a transparency issue happening in some decorations.-Cosmetic changes to menu slots.-Minor bug fixes.Read full article on Community Announcements (Lunarian Dev)Patch NotesOfficial
Patch Notes 1.0.14
Fixed a bug that would cause some fish to remain floating after selling a tank under certain circumstances.Fixed a bug that was causing the music bar to not minimize at times.Fixed a bug that was causing the automation toggles of a tank to show the wrong values.Minor tweaks.Read full article on Community Announcements (Lunarian Dev)
