Free Underwater Games on Steam
Steam currently has 627 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 4/7/2025.
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 80. Its score was calculated by analyzing a total of 223 reviews on Steam. This breaks down to a total of 195 positive reviews and 28 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 531 reviews on Steam. This breaks down to a total of 501 positive reviews and 30 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. 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 70, placing it in the #3 spot for the best free Underwater games. Its score was calculated by analyzing a total of 39 reviews on Steam. This breaks down to a total of 31 positive reviews and 8 negative reviews — making it "Mostly 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 | 2/15/2024 |
| Developer | Alder Games |
| Publisher | Legacy Games |
| Steam App Id | 2678160 |
4. 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 66, placing it in the #4 spot for the best free Underwater games. Its score was calculated by analyzing a total of 199 reviews on Steam. This breaks down to a total of 140 positive reviews and 59 negative reviews — making it "Mostly 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 | 9/30/2024 |
| Developer | Gluten Free Games |
| Publisher | Gluten Free Games |
| Steam App Id | 2775910 |
5. Submorse
Chill out in a submarine as you learn Morse code! Submorse is an atmospheric, first-person game that teaches you the international Morse signals.
Submorse has achieved a Player Score of 83, placing it in the #5 spot for the best free Underwater games. Its score was calculated by analyzing a total of 172 reviews on Steam. This breaks down to a total of 158 positive reviews and 14 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 Submorse on the Steam Deck (though some functionality may be limited).
| Release Date | 3/31/2021 |
| Developer | Team Monumental |
| Publisher | Team Monumental |
| Steam App Id | 912380 |
6. INFLUXIS
Explore a mesmerizing alien world, filled with deep bioluminescent wonders and horrors alike. Old alien artefacts await uncovering, in your search for the lost crew of Lazarus, in the search for your family in the depths of planet Eo-III.
INFLUXIS has achieved a Player Score of 65, placing it in the #6 spot for the best free Underwater games. Its score was calculated by analyzing a total of 209 reviews on Steam. This breaks down to a total of 143 positive reviews and 66 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 | 9/1/2020 |
| Developer | BaleYc Studios |
| Publisher | BaleYc Studios |
| Steam App Id | 1393830 |
7. 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 #7 spot for the best free Underwater games. Its score was calculated by analyzing a total of 135 reviews on Steam. This breaks down to a total of 127 positive reviews and 8 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 |
8. Aquarist - My First Job
Get your first job in the Aquarist! Learn how to set up aquarium, decorate it and take care of your fish!
Aquarist - My First Job has achieved a Player Score of 60, placing it in the #8 spot for the best free Underwater games. Its score was calculated by analyzing a total of 112 reviews on Steam. This breaks down to a total of 71 positive reviews and 41 negative reviews — making it "Mixed" on Steam.
It can be played and ran on Windows systems. At the moment, it is possible to play Aquarist - My First Job on the Steam Deck (though some functionality may be limited).
| Release Date | 9/16/2021 |
| Developers | |
| Publishers | |
| Steam App Id | 1584660 |
9. 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 67, placing it in the #9 spot for the best free Underwater games. Its score was calculated by analyzing a total of 429 reviews on Steam. This breaks down to a total of 299 positive reviews and 130 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).
10. Ellisar
Dive into this magical underwater adventure. Explore a corrupted environment moving with your two transformations to help fix the disaster that almost ended life around your world. Ellisar is a third person contemplative exploration and adventure game.
Ellisar has achieved a Player Score of 71, placing it in the #10 spot for the best free Underwater games. Its score was calculated by analyzing a total of 158 reviews on Steam. This breaks down to a total of 121 positive reviews and 37 negative reviews — making it "Mostly 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 | 5/9/2022 |
| Developer | Cogames Studio |
| Publisher | Cogames Studio |
| Steam App Id | 1940310 |
More Free Underwater Games
Explore even more rankings for the 75 best free Underwater games available on Steam.
| Image | Name | Actions | ||||
|---|---|---|---|---|---|---|
| 9 | 2/13/2024 | 80 | Free | Steam Charts | |
| 8 | 9/14/2023 | 88 | Free | Steam Charts | |
| 5 | 2/15/2024 | 70 | Free | Steam Charts | |
| 3 | 9/30/2024 | 66 | Free | Steam Charts | |
| 3 | 3/31/2021 | 83 | Free | Steam Charts | |
| 2 | 9/1/2020 | 65 | Free | Steam Charts | |
| 2 | 4/24/2023 | 84 | Free | Steam Charts | |
| 2 | 9/16/2021 | 60 | Free | Steam Charts | |
| 2 | 10/22/2021 | 67 | Free | Steam Charts | |
| 2 | 5/9/2022 | 71 | Free | Steam Charts | |
 | 2 | 4/11/2025 | 59 | Free | Steam Charts | |
 | 1 | 7/15/2024 | 53 | Free | Steam Charts | |
 | 1 | 7/15/2024 | 70 | Free | Steam Charts | |
 | 1 | 5/31/2024 | 72 | Free | Steam Charts | |
 | 1 | 2/4/2025 | 67 | Free | Steam Charts | |
 | 1 | 1/2/2024 | 52 | Free | Steam Charts | |
 | 1 | 12/20/2024 | 56 | Free | Steam Charts | |
 | 1 | 11/4/2024 | 59 | Free | Steam Charts | |
 | 1 | 8/20/2021 | 83 | Free | Steam Charts | |
 | 1 | 1/23/2024 | 72 | 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, April 7). Steam Store. Steam Store.
- Valve Corporation. (2025, April 7). Shrimp.io on Steam. Steam Store.
- Valve Corporation. (2025, February 26). IronWolf: Free Non-VR Edition on Steam. Steam Store.
- Valve Corporation. (2025, March 24). Pearls of Atlantis: The Cove on Steam. Steam Store.
- Valve Corporation. (2025, April 7). Infinite Blue on Steam. Steam Store.
- Valve Corporation. (2025, March 14). Submorse on Steam. Steam Store.
- Valve Corporation. (2025, March 24). INFLUXIS on Steam. Steam Store.
- Valve Corporation. (2025, April 1). Coral Cove on Steam. Steam Store.
- Valve Corporation. (2025, March 14). Aquarist - My First Job on Steam. Steam Store.
- Valve Corporation. (2024, September 22). 疯狂炮炮捕鱼 on Steam. Steam Store.
- Valve Corporation. (2025, March 18). Ellisar on Steam. Steam Store.