Free Underwater Games on Steam
Steam currently has 814 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 12/30/2025.
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 78. Its score was calculated by analyzing a total of 260 reviews on Steam. This breaks down to a total of 220 positive reviews and 40 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. 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 #2 spot for the best free Underwater games. Its score was calculated by analyzing a total of 633 reviews on Steam. This breaks down to a total of 596 positive reviews and 37 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 |
3. Dread Not
Avoid your watery grave in this asymmetrical co-op horror game where you and a friend take the roles of a submarine Pilot and Mechanic. Work together to repair the ship, solve puzzles, avoid a deadly creature, and make it back to the surface before time runs out! It's time to Sync or Swim
Dread Not has achieved a Player Score of 46, placing it in the #3 spot for the best free Underwater games. Its score was calculated by analyzing a total of 522 reviews on Steam. This breaks down to a total of 237 positive reviews and 285 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 | 6/15/2025 |
| Developer | Leviathan Interactive |
| Publisher | Leviathan Interactive |
| Steam App Id | 3616560 |
4. 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 74, placing it in the #4 spot for the best free Underwater games. Its score was calculated by analyzing a total of 31 reviews on Steam. This breaks down to a total of 27 positive reviews and 4 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 |
5. 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 #5 spot for the best free Underwater games. Its score was calculated by analyzing a total of 46 reviews on Steam. This breaks down to a total of 37 positive reviews and 9 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 |
6. 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 #6 spot for the best free Underwater games. Its score was calculated by analyzing a total of 425 reviews on Steam. This breaks down to a total of 296 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).
7. Together in Forgotten Lands: Chapter One
Two souls, one destiny. Embark on a co-op adventure through a forgotten land, where teamwork and wit are the only way to navigate the wonders and dangers of a magical cave.
Together in Forgotten Lands: Chapter One has achieved a Player Score of 82, placing it in the #7 spot for the best free Underwater games. Its score was calculated by analyzing a total of 204 reviews on Steam. This breaks down to a total of 183 positive reviews and 21 negative reviews — making it "Very 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 | 8/18/2025 |
| Developer | Vellichor Games |
| Publisher | Vellichor Games |
| Steam App Id | 3723610 |
8. Sync Or Sink
Trapped in a sinking submarine, two players must communicate through walkie-talkies to solve puzzles, complete tasks, navigate the depths, and escape before time runs out.
Sync Or Sink has achieved a Player Score of 82, placing it in the #8 spot for the best free Underwater games. Its score was calculated by analyzing a total of 130 reviews on Steam. This breaks down to a total of 119 positive reviews and 11 negative reviews — making it "Very 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 | 10/1/2025 |
| Developer | Low Effort Interactive |
| Publisher | Low Effort Interactive |
| Steam App Id | 3626910 |
9. Submerged Mystery: Takodachi
Brave the Labyrinth and obtain lost powers to overcome great challenges in this Roguelike Dungeon-Crawler adventure.
Submerged Mystery: Takodachi has achieved a Player Score of 78, placing it in the #9 spot for the best free Underwater games. Its score was calculated by analyzing a total of 30 reviews on Steam. This breaks down to a total of 28 positive reviews and 2 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 | 9/12/2024 |
| Developers | |
| Publisher | Velveteen |
| Steam App Id | 3185140 |
10. The Littlest Fry
You are a small goldfish who has to protect a youngling while discovering how unforgiving the ponds in the wilderness are. Your objective is to defend a baby fish from predators while out maneuvering them while evading other obstacles that may be in your way while searching for safer waters.
The Littlest Fry has achieved a Player Score of 72, placing it in the #10 spot for the best free Underwater games. Its score was calculated by analyzing a total of 12 reviews on Steam. This breaks down to a total of 11 positive reviews and 1 negative reviews — making it "Positive" on Steam.
It can be played and ran on Windows systems. At the moment, it is possible to play The Littlest Fry on the Steam Deck (though some functionality may be limited).
| Release Date | 5/30/2024 |
| Developer | Finnish Fries |
| Publisher | Ahlman Games |
| Steam App Id | 2970080 |
More Free Underwater Games
Explore even more rankings for the 96 best free Underwater games available on Steam.
| Image | Name | Actions | ||||
|---|---|---|---|---|---|---|
| 69 | 2/13/2024 | 78 | Free | Steam Charts | |
| 6 | 9/14/2023 | 88 | Free | Steam Charts | |
| 4 | 6/15/2025 | 46 | Free | Steam Charts | |
| 3 | 6/3/2025 | 74 | Free | Steam Charts | |
| 3 | 2/15/2024 | 71 | Free | Steam Charts | |
| 3 | 10/22/2021 | 66 | Free | Steam Charts | |
| 2 | 8/18/2025 | 82 | Free | Steam Charts | |
| 2 | 10/1/2025 | 82 | Free | Steam Charts | |
| 1 | 9/12/2024 | 78 | Free | Steam Charts | |
| 1 | 5/30/2024 | 72 | Free | Steam Charts | |
 | 1 | 3/25/2024 | 68 | Free | Steam Charts | |
 | 1 | 3/22/2024 | 70 | Free | Steam Charts | |
 | 1 | 12/8/2023 | 78 | Free | Steam Charts | |
 | 1 | 6/9/2023 | 94 | Free | Steam Charts | |
 | 1 | 5/9/2022 | 71 | Free | Steam Charts | |
 | 1 | 3/22/2024 | 67 | Free | Steam Charts | |
 | 1 | 2/11/2021 | 57 | Free | Steam Charts | |
 | 1 | 7/26/2025 | 64 | Free | Steam Charts | |
 | 1 | 1/23/2024 | 74 | Free | Steam Charts | |
 | 1 | 8/14/2025 | 82 | 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, December 30). Steam Store. Steam Store.
- Valve Corporation. (2025, December 30). Shrimp.io on Steam. Steam Store.
- Valve Corporation. (2026, March 8). IronWolf: Free Non-VR Edition on Steam. Steam Store.
- Valve Corporation. (2026, February 27). Dread Not on Steam. Steam Store.
- Valve Corporation. (2026, March 10). Desktank on Steam. Steam Store.
- Valve Corporation. (2026, January 7). Pearls of Atlantis: The Cove on Steam. Steam Store.
- Valve Corporation. (2024, September 22). 疯狂炮炮捕鱼 on Steam. Steam Store.
- Valve Corporation. (2026, March 16). Together in Forgotten Lands: Chapter One on Steam. Steam Store.
- Valve Corporation. (2026, February 2). Sync Or Sink on Steam. Steam Store.
- Valve Corporation. (2026, February 1). Submerged Mystery: Takodachi on Steam. Steam Store.
- Valve Corporation. (2025, December 14). The Littlest Fry on Steam. Steam Store.