Single-player games like Subnautic Raider
Below are 8 single-player Steam games similar to Subnautic Raider, ranked by player overlap. Every pick carries Steam's Single-player category, so multiplayer-only titles or always-online games don't sneak in. imho.run pulls the category data from Steam directly — Single-player here matches what the store labels.
Want the full alternatives list (paid + free + Steam Deck + cheaper picks)? See the parent games like Subnautic Raider page.
Ranked picks
- 1
Morse Depths: WWII
Single-player alternative to Subnautic Raider — playable solo, no multiplayer required. Shares Action and Indie with Subnautic Raider.
Take command of a WWII submarine. Master Morse Code to fire torpedoes, defuse mines, and survive the final siege. From 1942 to 1945, every dot and dash is the difference between glory and the ocean floor.
- 2
UBOAT
Single-player alternative to Subnautic Raider — playable solo, no multiplayer required. Shares Action and Indie with Subnautic Raider.
UBOAT is a simulator of a submarine from WWII era. It is a survival sandbox with crew management mechanics while its primary theme is life of German sailors. The boat is their home, but it can become their grave at any time.
- 3
Earth Atlantis 2
Single-player alternative to Subnautic Raider — playable solo, no multiplayer required. Shares Action with Subnautic Raider.
Earth Atlantis 2 is a boss-focused shoot 'em up set in a post-apocalyptic sunken world ruled by machine sea monsters. Pilot a heavily armed sub through relentless battles against 20+ colossal bosses, explore a Metroidvania-style underwater world, and uncover lost secrets to save humanity.
- 4
SHIPS AT WAR
Single-player alternative to Subnautic Raider — playable solo, no multiplayer required. Shares Action with Subnautic Raider.
Sink player-made battleships, aircraft carriers and submarines in this physics-based game. Use pre-built ships and sink the enemy by deploying aircraft, torpedoes, depth charges or shells. Or built your own ships in the extensive ship-editor.
- 5
Destroyer: The U-Boat Hunter
Single-player alternative to Subnautic Raider — playable solo, no multiplayer required. Shares Action and Indie with Subnautic Raider.
Destroyer: The U-Boat Hunter brings you an authentic and historically accurate destroyer simulation along with gripping anti-submarine warfare set in the turmoils of the Atlantic Ocean during World War II.
- 6
Aircraft Carrier Survival
Single-player alternative to Subnautic Raider — playable solo, no multiplayer required. Shares Action and Indie with Subnautic Raider.
When the harshness of the sea meets the cruelties of war, a challenge for perseverance makes itself known. Welcome to Aircraft Carrier Survival, a strategy game set in the Pacific Theater of World War II, where your prowess as a commander decides the fate of a naval behemoth.
- 7
Waves of Steel
Single-player alternative to Subnautic Raider — playable solo, no multiplayer required. Shares Action and Indie with Subnautic Raider.
If you like warships but wish they could kickflip, Waves of Steel is for you! Build your own custom warship and embark on a sprawling campaign filled with enemy ships, planes, submarines, and bizarre superweapons. Fast-paced arcade naval action is here!
- 8
Darkwater
Single-player alternative to Subnautic Raider — playable solo, no multiplayer required. Shares Action and Indie with Subnautic Raider.
Darkwater is a cooperative extraction horror game for 1-4 players. Command a submarine trapped under the ice of an alien planet. Battle enemy vessels and deep sea abominations as you hunt for resources. Do what it takes to survive.