Free Submarine Games on Steam
Steam currently has 232 Submarine 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 Submarine game rankings were last updated on 10/12/2025.
Looking for more? Explore other lists such as:
- Best submarine games on Steam
- Best submarine Steam Deck games
- Best submarine Steam games for Mac OS
- Best submarine Linux games on Steam
- Free Steam games
- Most played Steam games
- Best rated Steam games
1. 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 holds the #1 spot for "best free Submarine game on Steam" with a Player Score of 78. Its score was calculated by analyzing a total of 24 reviews on Steam. This breaks down to a total of 23 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 | 10/1/2025 |
| Developer | Low Effort Interactive |
| Publisher | Low Effort Interactive |
| Steam App Id | 3626910 |
2. 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 44, placing it in the #2 spot for the best free Submarine games. Its score was calculated by analyzing a total of 410 reviews on Steam. This breaks down to a total of 177 positive reviews and 233 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 |
3. Retro Commander
Retro Commander is a post-apocalyptic real-time strategy wargame (RTS).
Retro Commander has achieved a Player Score of 72, placing it in the #3 spot for the best free Submarine games. Its score was calculated by analyzing a total of 328 reviews on Steam. This breaks down to a total of 252 positive reviews and 76 negative reviews — making it "Mostly Positive" on Steam.
It can be played and ran on Windows, Mac, and Linux systems. At the moment, it is possible to play Retro Commander on the Steam Deck (though some functionality may be limited).
| Release Date | 11/24/2023 |
| Developer | Noble Master LLC |
| Publisher | Noble Master LLC |
| Steam App Id | 338820 |
4. Pixel Puzzles World War II Jigsaw Puzzles
Pixel Puzzles, your number one place for digital jigsaws.
Pixel Puzzles World War II Jigsaw Puzzles has achieved a Player Score of 83, placing it in the #4 spot for the best free Submarine games. Its score was calculated by analyzing a total of 49 reviews on Steam. This breaks down to a total of 48 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 Pixel Puzzles World War II Jigsaw Puzzles on the Steam Deck (though some functionality may be limited).
| Release Date | 9/6/2023 |
| Developer | Pixel Puzzles |
| Publisher | Pixel Puzzles |
| Steam App Id | 1005220 |
5. 无畏舰队：炮火战争（Noah City:Rise of the conqueror）
Noah City:Rise of the conqueror is a SLG game. It takes place in an alternative reality where a great naval war is spreading all over the world. it focus on developing players’ gears and finding a comfortable pace of the gameplay, players who are fond of SLG games, you certainly cannot miss it!
无畏舰队：炮火战争（Noah City:Rise of the conqueror） has achieved a Player Score of 62, placing it in the #5 spot for the best free Submarine games. Its score was calculated by analyzing a total of 160 reviews on Steam. This breaks down to a total of 105 positive reviews and 55 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 | 1/24/2024 |
| Developer | LEOPARD STORM |
| Publisher | LEOPARD STORM |
| Steam App Id | 2676820 |
6. South Scrimshaw, Part One
South Scrimshaw is the story of a newborn whale in a vast alien ocean. It is a richly illustrated experimental visual novel, written in the style of a nature documentary.
South Scrimshaw, Part One has achieved a Player Score of 94, placing it in the #6 spot for the best free Submarine games. Its score was calculated by analyzing a total of 1,459 reviews on Steam. This breaks down to a total of 1,445 positive reviews and 14 negative reviews — making it "Overwhelmingly Positive" on Steam.
It can be played and ran on both Windows and Linux systems. At the moment, it is possible to play South Scrimshaw, Part One on the Steam Deck (though some functionality may be limited).
| Release Date | 6/9/2023 |
| Developer | Nathan O. Marsh |
| Publisher | Nathan O. Marsh |
| Steam App Id | 2443110 |
7. Siphonopolis
Enter a surreal, rotting, underwater world. Chat with some creatures. Murder a lot more. Find the heart.
Siphonopolis has achieved a Player Score of 64, placing it in the #7 spot for the best free Submarine games. Its score was calculated by analyzing a total of 25 reviews on Steam. This breaks down to a total of 18 positive reviews and 7 negative reviews — making it "Mostly Positive" on Steam.
It can be played and ran on Windows systems. At the moment, it is possible to play Siphonopolis on the Steam Deck (though some functionality may be limited).
| Release Date | 8/31/2022 |
| Developer | ApeHardware |
| Publisher | ApeHardware |
| Steam App Id | 2050150 |
8. 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 #8 spot for the best free Submarine games. Its score was calculated by analyzing a total of 587 reviews on Steam. This breaks down to a total of 555 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 |
9. Under the Water Depths
Under the Water Depths is a first-person game in which you will dive into a trench in the middle of an unknown ocean. The depths of the sea hide sinister yet mystical secrets.
Under the Water Depths has achieved a Player Score of 53, placing it in the #9 spot for the best free Submarine games. Its score was calculated by analyzing a total of 7 reviews on Steam. This breaks down to a total of 4 positive reviews and 3 negative reviews — making it "7 user reviews" on Steam.
It can be played and ran on Windows systems. At the moment, it is not possible to play or run Under the Water Depths on the Steam Deck.
| Release Date | 7/17/2023 |
| Developer | Submerged Squad |
| Publisher | Submerged Squad |
| Steam App Id | 2472570 |
10. Harmonic Depths
Embark on a relaxing journey in an underwater realm. Glide through captivating environments, embracing the tranquility of exploration and survival found in these Harmonic Depths.
Harmonic Depths has achieved a Player Score of 78, placing it in the #10 spot for the best free Submarine games. Its score was calculated by analyzing a total of 14 reviews on Steam. This breaks down to a total of 14 positive reviews and 0 negative reviews — making it "Positive" on Steam.
It can be played and ran on Windows systems. At the moment, it is possible to play Harmonic Depths on the Steam Deck (though some functionality may be limited).
More Free Submarine Games
Explore even more rankings for the 38 best free Submarine games available on Steam.
| Image | Name | Actions | ||||
|---|---|---|---|---|---|---|
| 13 | 10/1/2025 | 78 | Free | Steam Charts | |
| 8 | 6/15/2025 | 44 | Free | Steam Charts | |
| 8 | 11/24/2023 | 72 | Free | Steam Charts | |
| 5 | 9/6/2023 | 83 | Free | Steam Charts | |
| 4 | 1/24/2024 | 62 | Free | Steam Charts | |
| 3 | 6/9/2023 | 94 | Free | Steam Charts | |
| 2 | 8/31/2022 | 64 | Free | Steam Charts | |
| 2 | 9/14/2023 | 88 | Free | Steam Charts | |
| 1 | 7/17/2023 | 53 | Free | Steam Charts | |
| 1 | 12/8/2023 | 78 | Free | Steam Charts | |
 | 1 | 4/11/2025 | 69 | Free | Steam Charts | |
 | 1 | 7/27/2020 | 41 | Free | Steam Charts | |
 | 1 | 7/14/2023 | 76 | Free | Steam Charts | |
 | 1 | 11/28/2022 | 57 | Free | Steam Charts | |
 | 1 | 11/4/2024 | 55 | Free | Steam Charts | |
 | 1 | 2/16/2022 | 70 | Free | Steam Charts | |
 | 1 | 9/3/2021 | 93 | Free | Steam Charts | |
 | 1 | 5/9/2022 | 71 | Free | Steam Charts | |
 | 1 | 8/14/2024 | 62 | Free | Steam Charts | |
 | 1 | 5/30/2025 | 45 | 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, October 12). Steam Store. Steam Store.
- Valve Corporation. (2025, October 12). Sync Or Sink on Steam. Steam Store.
- Valve Corporation. (2025, October 11). Dread Not on Steam. Steam Store.
- Valve Corporation. (2025, October 8). Retro Commander on Steam. Steam Store.
- Valve Corporation. (2025, October 12). Pixel Puzzles World War II Jigsaw Puzzles on Steam. Steam Store.
- Valve Corporation. (2025, September 28). 无畏舰队：炮火战争（Noah City:Rise of the conqueror） on Steam. Steam Store.
- Valve Corporation. (2025, October 8). South Scrimshaw, Part One on Steam. Steam Store.
- Valve Corporation. (2025, October 6). Siphonopolis on Steam. Steam Store.
- Valve Corporation. (2025, October 4). IronWolf: Free Non-VR Edition on Steam. Steam Store.
- Valve Corporation. (2025, May 15). Under the Water Depths on Steam. Steam Store.
- Valve Corporation. (2025, May 15). Harmonic Depths on Steam. Steam Store.