Free Underwater Games on Steam
Steam currently has 588 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 2/4/2025.
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. 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 holds the #1 spot for "best free Underwater game on Steam" with a Player Score of 66. Its score was calculated by analyzing a total of 162 reviews on Steam. This breaks down to a total of 115 positive reviews and 47 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 |
2. BLOODSONG
She's just a teenage siren. Let her rock... Play as Mari, a punk rock siren princess, who’s hell-bent on headlining her concert no matter the cost. Use your ear and “bloodsong” to match musical pitch, defeat enemies, and solve puzzles along the way. The stage is set–are you ready to rock?!
BLOODSONG has achieved a Player Score of 59, placing it in the #2 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 8 positive reviews and 4 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 | 12/25/2023 |
| Developer | Three Owls In a Trench Coat |
| Publisher | Three Owls In a Trench Coat |
| Steam App Id | 2484860 |
3. Under the blue horizon - Aquarium
"Under the blue horizon - Aquarium" is a game for those who want to enjoy watching fish. Observe fish in the sea and in aquariums. Discover more types of special fish. Enjoy it while working, relax, or clear your mind.
Under the blue horizon - Aquarium has achieved a Player Score of 67, placing it in the #3 spot for the best free Underwater games. Its score was calculated by analyzing a total of 19 reviews on Steam. This breaks down to a total of 15 positive reviews and 4 negative reviews — making it "Mostly Positive" 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.
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 67, placing it in the #4 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).
5. 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 #5 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 138 positive reviews and 61 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 |
6. Ocean Protector
Ocean Protector is a free online educational game that teaches students about the impacts of ocean acidification and how they can take action to prevent it.
Ocean Protector has achieved a Player Score of 67, placing it in the #6 spot for the best free Underwater games. Its score was calculated by analyzing a total of 7 reviews on Steam. This breaks down to a total of 6 positive reviews and 1 negative reviews — making it "7 user reviews" on Steam.
It can be played and ran on Windows, Mac, and Linux systems. At the moment, it is not possible to play or run Ocean Protector on the Steam Deck.
| Release Date | 8/30/2023 |
| Developer | Outreach Games |
| Publisher | Outreach Games |
| Steam App Id | 2553210 |
7. Dry Visit - Virtual Underwater Visit - iMARECulture
Thanks to the iMARECULTURE project, you can virtually dive into the 3D reconstructions of 3 of the most beautiful UW archaeological sites of the Mediterranean Sea: the UW Archaeological Park of Baiae (Naples, Italy), the Phoenician shipwreck of Xlendi (Gozo, Malta) and the Mazotos Shipwreck (Cyprus)
Dry Visit - Virtual Underwater Visit - iMARECulture has achieved a Player Score of 72, placing it in the #7 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, there is no confirmed information regarding Steam Deck support for this game.
| Release Date | 5/4/2020 |
| Developer | 3D Research Srl |
| Publisher | 3D Research Srl |
| Steam App Id | 1242830 |
8. Pearl Fishery: Quest for the Mega Pearl
Shoot pearls, fire harpoons, and collect treasure under the mysterious "Pearl Island" in this new single-player, ocean-themed coin pusher game!
Pearl Fishery: Quest for the Mega Pearl has achieved a Player Score of 69, placing it in the #8 spot for the best free Underwater games. Its score was calculated by analyzing a total of 9 reviews on Steam. This breaks down to a total of 8 positive reviews and 1 negative reviews — making it "9 user reviews" on Steam.
It can be played and ran on Windows systems. At the moment, it is possible to play Pearl Fishery: Quest for the Mega Pearl on the Steam Deck (though some functionality may be limited).
| Release Date | 3/22/2024 |
| Developers | |
| Publishers | |
| Steam App Id | 2826860 |
9. ENDER OCEAN - Your mission: "Clean the Ocean"
The Ender Ocean principle? Locate and collect waste (plastic bags, bottles, lost nets...) thanks to underwater robots connected to a collection boat, in order to valorize them afterwards, all from home.
ENDER OCEAN - Your mission: "Clean the Ocean" has achieved a Player Score of 63, placing it in the #9 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 9 positive reviews and 3 negative reviews — making it "Mostly Positive" on Steam.
It can be played and ran on Windows, Mac, and Linux systems. At the moment, there is no confirmed information regarding Steam Deck support for this game.
| Release Date | 9/9/2022 |
| Developer | Ender Ocean |
| Publisher | Ender Ocean |
| Steam App Id | 2108210 |
10. Crash Test Oliver
Dive into a stylized 2.5D metroidvania world. Beat enemies, find and collect items as you progress through a struggling world to finally escape the simulation. Are you ready for this journey?
Crash Test Oliver has achieved a Player Score of 76, placing it in the #10 spot for the best free Underwater games. Its score was calculated by analyzing a total of 10 reviews on Steam. This breaks down to a total of 10 positive reviews and 0 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 | 4/5/2023 |
| Developer | WSG Entertainment |
| Publisher | WSG Entertainment |
| Steam App Id | 1936860 |
More Free Underwater Games
Explore even more rankings for the 69 best free Underwater games available on Steam.
| Image | Name | Actions | ||||
|---|---|---|---|---|---|---|
| 5 | 9/30/2024 | 66 | Free | Steam Charts | |
| 3 | 12/25/2023 | 59 | Free | Steam Charts | |
| 2 | 10/23/2024 | 67 | Free | Steam Charts | |
| 2 | 10/22/2021 | 67 | Free | Steam Charts | |
| 1 | 9/1/2020 | 65 | Free | Steam Charts | |
| 1 | 8/30/2023 | 67 | Free | Steam Charts | |
| 1 | 5/4/2020 | 72 | Free | Steam Charts | |
| 1 | 3/22/2024 | 69 | Free | Steam Charts | |
| 1 | 9/9/2022 | 63 | Free | Steam Charts | |
| 1 | 4/5/2023 | 76 | Free | Steam Charts | |
 | 1 | 3/31/2021 | 83 | Free | Steam Charts | |
 | 1 | 7/15/2024 | 57 | Free | Steam Charts | |
 | 1 | 7/15/2024 | 70 | Free | Steam Charts | |
 | 1 | 1/2/2024 | 52 | Free | Steam Charts | |
 | 1 | 11/4/2024 | 58 | Free | Steam Charts | |
 | 1 | 8/20/2021 | 83 | Free | Steam Charts | |
 | 1 | 1/23/2024 | 72 | Free | Steam Charts | |
 | 1 | 6/30/2022 | 65 | Free | Steam Charts | |
 | 1 | 12/8/2023 | 77 | Free | Steam Charts | |
 | 1 | 10/31/2024 | 56 | 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, February 4). Steam Store. Steam Store.
- Valve Corporation. (2025, February 4). Infinite Blue on Steam. Steam Store.
- Valve Corporation. (2024, December 30). BLOODSONG on Steam. Steam Store.
- Valve Corporation. (2025, February 1). Under the blue horizon - Aquarium on Steam. Steam Store.
- Valve Corporation. (2024, September 22). 疯狂炮炮捕鱼 on Steam. Steam Store.
- Valve Corporation. (2025, January 28). INFLUXIS on Steam. Steam Store.
- Valve Corporation. (2024, September 5). Ocean Protector on Steam. Steam Store.
- Valve Corporation. (2024, November 23). Dry Visit - Virtual Underwater Visit - iMARECulture on Steam. Steam Store.
- Valve Corporation. (2024, October 8). Pearl Fishery: Quest for the Mega Pearl on Steam. Steam Store.
- Valve Corporation. (2024, November 6). ENDER OCEAN - Your mission: "Clean the Ocean" on Steam. Steam Store.
- Valve Corporation. (2024, December 25). Crash Test Oliver on Steam. Steam Store.