Free Submarine Games on Steam
Steam currently has 233 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 10/4/2025.
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. 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 holds the #1 spot for "best free Submarine game on Steam" with a Player Score of 88. Its score was calculated by analyzing a total of 597 reviews on Steam. This breaks down to a total of 565 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 |
2. 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 81, placing it in the #2 spot for the best free Submarine games. Its score was calculated by analyzing a total of 105 reviews on Steam. This breaks down to a total of 95 positive reviews and 10 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 |
3. 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 63, placing it in the #3 spot for the best free Submarine games. Its score was calculated by analyzing a total of 162 reviews on Steam. This breaks down to a total of 108 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 无畏舰队：炮火战争（Noah City:Rise of the conqueror） on the Steam Deck.
| Release Date | 1/24/2024 |
| Developer | LEOPARD STORM |
| Publisher | LEOPARD STORM |
| Steam App Id | 2676820 |
4. 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 #4 spot for the best free Submarine games. Its score was calculated by analyzing a total of 333 reviews on Steam. This breaks down to a total of 257 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 |
5. 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 #5 spot for the best free Submarine games. Its score was calculated by analyzing a total of 450 reviews on Steam. This breaks down to a total of 191 positive reviews and 259 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 |
6. Marine Quest
Simple turn-based RPG where you make your way across different marine-based landscapes, fighting several harmful species or objects in a quest to save the ocean.
Marine Quest has achieved a Player Score of 62, placing it in the #6 spot for the best free Submarine games. Its score was calculated by analyzing a total of 8 reviews on Steam. This breaks down to a total of 6 positive reviews and 2 negative reviews — making it "8 user reviews" on Steam.
It can be played and ran on Windows systems. At the moment, it is possible to play Marine Quest on the Steam Deck (though some functionality may be limited).
| Release Date | 8/14/2024 |
| Developer | Greg Terteryan |
| Publisher | GT_Eternity Studios |
| Steam App Id | 3120860 |
7. 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 84, placing it in the #7 spot for the best free Submarine games. Its score was calculated by analyzing a total of 185 reviews on Steam. This breaks down to a total of 171 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 |
8. 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 #8 spot for the best free Submarine games. Its score was calculated by analyzing a total of 163 reviews on Steam. This breaks down to a total of 126 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 |
9. 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 #9 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).
10. Pakicetus Redux
In deep-sea action-adventure game Pakicetus Redux, take command, choose your mission, and lead the escort submarine Salvation along a seafloor rift. Balance resource collection, upgrades, and the fate of human civilization as you battle an emerging enemy bent on stopping your search for a new home.
Pakicetus Redux has achieved a Player Score of 65, placing it in the #10 spot for the best free Submarine games. Its score was calculated by analyzing a total of 10 reviews on Steam. This breaks down to a total of 8 positive reviews and 2 negative reviews — making it "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 | 4/11/2025 |
| Developers | |
| Publisher | Polymorphic Games |
| Steam App Id | 2069380 |
More Free Submarine Games
Explore even more rankings for the 38 best free Submarine games available on Steam.
| Image | Name | Actions | ||||
|---|---|---|---|---|---|---|
| 10 | 9/14/2023 | 88 | Free | Steam Charts | |
| 6 | 10/1/2025 | 81 | Free | Steam Charts | |
| 3 | 1/24/2024 | 63 | Free | Steam Charts | |
| 2 | 11/24/2023 | 72 | Free | Steam Charts | |
| 2 | 6/15/2025 | 44 | Free | Steam Charts | |
| 2 | 8/14/2024 | 62 | Free | Steam Charts | |
| 2 | 3/31/2021 | 84 | Free | Steam Charts | |
| 1 | 5/9/2022 | 71 | Free | Steam Charts | |
| 1 | 12/8/2023 | 78 | Free | Steam Charts | |
| 1 | 4/11/2025 | 65 | Free | Steam Charts | |
 | 1 | 7/27/2020 | 41 | Free | Steam Charts | |
 | 1 | 9/3/2021 | 93 | 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 | 5/16/2023 | 48 | Free | Steam Charts | |
 | 1 | 9/6/2023 | 82 | Free | Steam Charts | |
 | 1 | 5/30/2025 | 43 | Free | Steam Charts | |
 | 1 | 11/1/2024 | 48 | 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 4). Steam Store. Steam Store.
- Valve Corporation. (2025, October 4). IronWolf: Free Non-VR Edition on Steam. Steam Store.
- Valve Corporation. (2025, November 15). Sync Or Sink on Steam. Steam Store.
- Valve Corporation. (2025, November 8). 无畏舰队：炮火战争（Noah City:Rise of the conqueror） on Steam. Steam Store.
- Valve Corporation. (2025, November 9). Retro Commander on Steam. Steam Store.
- Valve Corporation. (2025, October 25). Dread Not on Steam. Steam Store.
- Valve Corporation. (2025, October 10). Marine Quest on Steam. Steam Store.
- Valve Corporation. (2025, October 26). Submorse on Steam. Steam Store.
- Valve Corporation. (2025, September 1). Ellisar on Steam. Steam Store.
- Valve Corporation. (2025, October 31). Harmonic Depths on Steam. Steam Store.
- Valve Corporation. (2025, November 12). Pakicetus Redux on Steam. Steam Store.