Screenshots
Watch trailer on Steam ↗Under the blue horizon
Pavdup, Chyopa · Published by DEVDUP
Mostly Positive — 79% positive (182 reviews) · 21 achievements
Last updated 28 Sept 2026
"Under the Blue Horizon" is an idle simulation game. Play while performing other tasks on your computer! Place your own aquarium anywhere on your screen, coexisting with your work, games, and more!
£4.99
Lowest price we've ever recorded
View on SteamPrices can lag the live Steam store — always confirm before buying.
Price history
Indie, Simulation, Casual · 2024 · More under £5 games
Explore a unique blend of casual simulation and productivity as you place an aquarium anywhere on your screen. Under the Blue Horizon offers a relaxing yet engaging experience that seamlessly integrates with your daily tasks, all from Pavdup and Chyopa's 2024 creation.
About this game
1. Create fish! Fish grow by eating shrimp. Raise various fish and observe diverse species (there are really many different kinds of fish!)
2. Build your own space under the blue horizon! You can turn the byproducts dropped by fish into currency (Aqua!). Collect Aqua to expand the sea, build and place structures!
3. Crawfish and jellyfish are friends who help you! Hire these friends and plan more efficient placements and ways to acquire resources!
4. Special friends provide various functions such as optimization, music, and new buildings! Hire special friends and enjoy diverse features!
5. We provide convenience features! Try intuitive UI with features like zoom in/out, monitor switching, window repositioning, and always-on-top display!
System Requirements
Will my PC run this? →Minimum
- OS: Windows 10
- Processor: Intel® Core™ i3 @ 3.2 GHZ
- Memory: 4 GB RAM
- DirectX: Version 9.0
- Storage: 300 MB available space
Recommended
- Memory: 8 GB RAM
- DirectX: Version 9.0
- Storage: 300 MB available space
- Additional Notes: Recommend More than FHD Monitor
Supported Languages
*languages with full audio support
Latest news
Patch NotesOfficial
Fix Errors
- resolution and full screen error - npc unlock errorRead full article on Community Announcements (PAVDUP)AnnouncementsOfficial
New game - “Under the blue horizon - Aquarium” will be free for owned players
We noticed a lot of feedback from people who played our game that they would like to see more idle and fish not die. We wanted to create a smaller version of that game using our existing assets, and the structure of the game changed a lot during development, so we diversified into two different games. Today we revealed the release schedule for the smaller game. https://store.steampowered.com/app/3197730/Under_the_blue_horizon__Aquarium/ Our new game - "Under the blue horizon - Aquarium" will be free for players who own "Under the blue horizon" We are currently exploring ways to apply that discount. We will also be updating Under the blue horizon with bug fixes before we release that content. Thank you for your patience. Thank you all for your continued support and enjoyment of our game.Read full article on Community Announcements (PAVDUP)Patch NotesOfficial
Fix Errors
- fix errors about fishesRead full article on Community Announcements (PAVDUP)Patch NotesOfficial
New feature (Relax Rock) and Small changes
- New Building! : Relax Rock - flip function for buildings - kingdom achievement become more easier (just 4) - fix errors (conversion rate reset, voltech tail, SC-Cropped)Read full article on Community Announcements (PAVDUP)Patch NotesOfficial
Small new features 2
- Add more detail tutorial - Current fish percentage visualize - Fish Multiplier (*2, 5, 10, 25, 100) - Add glitch mode for placing buildings - Setting value will remain after re-birth - Minor bugs fixedRead full article on Community Announcements (PAVDUP)
