Free Underwater Games on Steam
Steam currently has 708 Underwater games available to download and play. Explore our list of the best free games ranked by popularity and ratings. Data for this list is calculated from reviews and player counts reported directly by Steam and will be updated in real-time. Free Underwater game rankings were last updated on 8/25/2025.
Looking for more? Explore other lists such as:
- Best underwater games on Steam
- Best underwater Steam Deck games
- Best underwater Steam games for Mac OS
- Best underwater Linux games on Steam
- Free Steam games
- Most played Steam games
- Best rated Steam games
1. Shrimp.io
A Shrimp Based Bullet Heaven. Kill creatures, Level up & pick from 3 upgrades to unalive thousands more.
Shrimp.io holds the #1 spot for "best free Underwater game on Steam" with a Player Score of 79. Its score was calculated by analyzing a total of 241 reviews on Steam. This breaks down to a total of 206 positive reviews and 35 negative reviews — making it "Very Positive" on Steam.
It can be played and ran on Windows systems. At the moment, it is possible to play Shrimp.io on the Steam Deck (though some functionality may be limited).
2. Pearls of Atlantis: The Cove
Color match in a whole new way! Drop, pop, swap and match magic pearls to collect the charms inside and rebuild the hidden Cove of Memories!
Pearls of Atlantis: The Cove has achieved a Player Score of 71, placing it in the #2 spot for the best free Underwater games. Its score was calculated by analyzing a total of 41 reviews on Steam. This breaks down to a total of 33 positive reviews and 8 negative reviews — making it "Positive" on Steam.
It can be played and ran on Windows systems. At the moment, it is possible to play Pearls of Atlantis: The Cove on the Steam Deck (though some functionality may be limited).
| Release Date | 2/15/2024 |
| Developer | Alder Games |
| Publisher | Legacy Games |
| Steam App Id | 2678160 |
3. Infinite Blue
Discover an immersive ocean Eco-Sim where you can be almost any animal under the sea! From a tiny seahorse to a massive blue whale, experience the endless circle of life in a massive world of reefs, shipwrecks, and hidden wonders.
Infinite Blue has achieved a Player Score of 63, placing it in the #3 spot for the best free Underwater games. Its score was calculated by analyzing a total of 260 reviews on Steam. This breaks down to a total of 173 positive reviews and 87 negative reviews — making it "Mixed" on Steam.
It can be played and ran on Windows systems. At the moment, there is no confirmed information regarding Steam Deck support for this game.
| Release Date | 6/6/2025 |
| Developer | Gluten Free Games |
| Publisher | Gluten Free Games |
| Steam App Id | 2775910 |
4. 疯狂炮炮捕鱼
超爽福利版《疯狂炮炮捕鱼》闪亮登场，经典捕鱼玩法，十万倍率满屏BOSS，金币狂爆不停。每天送金币，每周有活动，创意捕鱼玩法，升级养成分数比拼一战到底。
疯狂炮炮捕鱼 has achieved a Player Score of 66, placing it in the #4 spot for the best free Underwater games. Its score was calculated by analyzing a total of 424 reviews on Steam. This breaks down to a total of 295 positive reviews and 129 negative reviews — making it "Mixed" on Steam.
It can be played and ran on Windows systems. At the moment, it is possible to play 疯狂炮炮捕鱼 on the Steam Deck (though some functionality may be limited).
5. Coral Cove
Coral Cove is a relaxing match 3-like underwater game in which you try to build the largest reef without running out of corals to place.
Coral Cove has achieved a Player Score of 84, placing it in the #5 spot for the best free Underwater games. Its score was calculated by analyzing a total of 139 reviews on Steam. This breaks down to a total of 130 positive reviews and 9 negative reviews — making it "Very Positive" on Steam.
It can be played and ran on Windows systems. At the moment, it is possible to play Coral Cove on the Steam Deck (though some functionality may be limited).
| Release Date | 4/24/2023 |
| Developers | |
| Publisher | MediaCube Games |
| Steam App Id | 1919350 |
6. IronWolf: Free Non-VR Edition
This is the Free Non-VR version of IronWolf VR. A co-op submarine game with a light touch on realism, making the submarine sim genre accessible to a wider audience.
IronWolf: Free Non-VR Edition has achieved a Player Score of 88, placing it in the #6 spot for the best free Underwater games. Its score was calculated by analyzing a total of 580 reviews on Steam. This breaks down to a total of 548 positive reviews and 32 negative reviews — making it "Very Positive" on Steam.
It can be played and ran on Windows systems. At the moment, it is possible to play IronWolf: Free Non-VR Edition on the Steam Deck (though some functionality may be limited).
| Release Date | 9/14/2023 |
| Developer | Ionized Studios |
| Publisher | Ionized Studios |
| Steam App Id | 2530670 |
7. Fish Collector: Aquarium Story
Run your own aquarium and evolve fish into mermaids! Fish Collector is a relaxing aquarium tycoon game that blends fish farming, idle resource production, match-3, and merge gameplay to build your fantasy ocean world.
Fish Collector: Aquarium Story has achieved a Player Score of 54, placing it in the #7 spot for the best free Underwater games. Its score was calculated by analyzing a total of 14 reviews on Steam. This breaks down to a total of 8 positive reviews and 6 negative reviews — making it "Mixed" on Steam.
It can be played and ran on both Windows and Mac systems. At the moment, there is no confirmed information regarding Steam Deck support for this game.
| Release Date | 8/31/2025 |
| Developers | |
| Publishers | |
| Steam App Id | 2386340 |
8. guraQuest
Play as Gawr Gura in this 2D-platformer Hololive Fan game! Jump and dash your way through 3 hand crafted levels and collect hidden shrimp in this vibrant, pixel-art environment.
guraQuest has achieved a Player Score of 81, placing it in the #8 spot for the best free Underwater games. Its score was calculated by analyzing a total of 32 reviews on Steam. This breaks down to a total of 31 positive reviews and 1 negative reviews — making it "Positive" on Steam.
It can be played and ran on Windows systems. At the moment, there is no confirmed information regarding Steam Deck support for this game.
| Release Date | 8/14/2025 |
| Developer | Lee-Pic |
| Publisher | holo Indie |
| Steam App Id | 3637180 |
9. Desktank
A cozy idle aquarium that lives on top of your screen. Watch fish swim, grow, and interact while you work or relax. Desktank turns your desktop into a peaceful underwater world — float it in the corner or let it take over the whole screen. Just sit back and enjoy the calm.
Desktank has achieved a Player Score of 69, placing it in the #9 spot for the best free Underwater games. Its score was calculated by analyzing a total of 17 reviews on Steam. This breaks down to a total of 14 positive reviews and 3 negative reviews — making it "Positive" on Steam.
It can be played and ran on Windows systems. At the moment, there is no confirmed information regarding Steam Deck support for this game.
| Release Date | 6/3/2025 |
| Developers | |
| Publishers | |
| Steam App Id | 2722730 |
10. Fishing Online
Begin your new online fishing adventure! Fishing Online is a cooperative adventure game where you explore the world and enjoy fishing with friends. Catch over 300 types of fish, complete your collection, and dive into crafting and cooking activities!
Fishing Online has achieved a Player Score of 54, placing it in the #10 spot for the best free Underwater games. Its score was calculated by analyzing a total of 121 reviews on Steam. This breaks down to a total of 67 positive reviews and 54 negative reviews — making it "Mixed" on Steam.
It can be played and ran on Windows systems. At the moment, it is not possible to play or run Fishing Online on the Steam Deck.
More Free Underwater Games
Explore even more rankings for the 85 best free Underwater games available on Steam.
| Image | Name | Actions | ||||
|---|---|---|---|---|---|---|
| 17 | 2/13/2024 | 79 | Free | Steam Charts | |
| 6 | 2/15/2024 | 71 | Free | Steam Charts | |
| 3 | 6/6/2025 | 63 | Free | Steam Charts | |
| 3 | 10/22/2021 | 66 | Free | Steam Charts | |
| 3 | 4/24/2023 | 84 | Free | Steam Charts | |
| 3 | 9/14/2023 | 88 | Free | Steam Charts | |
| 2 | 8/31/2025 | 54 | Free | Steam Charts | |
| 2 | 8/14/2025 | 81 | Free | Steam Charts | |
| 2 | 6/3/2025 | 69 | Free | Steam Charts | |
| 2 | 7/31/2025 | 54 | Free | Steam Charts | |
 | 2 | 6/15/2025 | 44 | Free | Steam Charts | |
 | 2 | 8/18/2025 | 83 | Free | Steam Charts | |
 | 1 | 10/23/2024 | 70 | Free | Steam Charts | |
 | 1 | 5/31/2024 | 72 | Free | Steam Charts | |
 | 1 | 1/2/2024 | 52 | Free | Steam Charts | |
 | 1 | 3/28/2023 | 65 | Free | Steam Charts | |
 | 1 | 6/15/2024 | 81 | Free | Steam Charts | |
 | 1 | 12/8/2023 | 78 | Free | Steam Charts | |
 | 1 | 10/31/2024 | 60 | Free | Steam Charts | |
 | 1 | 9/18/2023 | 60 | Free | Steam Charts |
Soures & References
Steambase has best-in-class data powered directly by Steam, our data partners, and in-house experts. Player counts and rankings are enriched, analyzed, and updated in real-time to ensure we surface the most up-to-date insights. Learn more about the Steambase approach to data collection and our review methodology.
- Valve Corporation. (2025, August 25). Steam Store. Steam Store.
- Valve Corporation. (2025, August 25). Shrimp.io on Steam. Steam Store.
- Valve Corporation. (2025, August 22). Pearls of Atlantis: The Cove on Steam. Steam Store.
- Valve Corporation. (2025, August 16). Infinite Blue on Steam. Steam Store.
- Valve Corporation. (2024, September 22). 疯狂炮炮捕鱼 on Steam. Steam Store.
- Valve Corporation. (2025, August 18). Coral Cove on Steam. Steam Store.
- Valve Corporation. (2025, May 28). IronWolf: Free Non-VR Edition on Steam. Steam Store.
- Valve Corporation. (2025, September 12). Fish Collector: Aquarium Story on Steam. Steam Store.
- Valve Corporation. (2025, September 2). guraQuest on Steam. Steam Store.
- Valve Corporation. (2025, August 17). Desktank on Steam. Steam Store.
- Valve Corporation. (2025, September 12). Fishing Online on Steam. Steam Store.