Single-player games like Sea Of Madness
Below are 8 single-player Steam games similar to Sea Of Madness, 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 Sea Of Madness page.
Ranked picks
- 1
Hadal
Single-player alternative to Sea Of Madness — playable solo, no multiplayer required. Shares Indie and Adventure with Sea Of Madness.
Guide a Nereid Freight submarine crew through Europa’s hostile under-ice oceans. Deliver essential cargo, salvage wrecks, repair failing stations, hunt dangerous lifeforms, and survive in the crushing darkness where every dive carries risk — and nothing stays quiet for long.
- 2
Battle Force 2249
Single-player alternative to Sea Of Madness — playable solo, no multiplayer required. Shares Action and Adventure with Sea Of Madness.
A character RPG in a living galaxy. You're the disgraced last heir of the cartographers who mapped the Meridian — left for dead, quietly alive. Rebuild a ship that's truly yours, choose your factions, and pull the thread of a cover-up the Axiom Collective buried generations ago.
- 3
Abyss Crew
Single-player alternative to Sea Of Madness — playable solo, no multiplayer required. Shares Indie and Adventure with Sea Of Madness.
Abyss Crew is a multiplayer coop game aboard a steampunk submarine. Each player is a member of the submarine crew - pilot, gunner, sonar, or engineer. Explore the abyss to find precious mineral - but beware, as sprawling menaces lurk in the darkness...
- 4
Plasticalypse - Submarine Adventures
Single-player alternative to Sea Of Madness — playable solo, no multiplayer required. Shares Action and Adventure with Sea Of Madness.
A journey of the last ocean cleaner submarine that is tasked to restore the ecosystem of a dying earth. "Plasticalypse: TrashSub Adventures“
- 5
Barotrauma
Single-player alternative to Sea Of Madness — playable solo, no multiplayer required. Shares Action and Indie with Sea Of Madness.
Barotrauma is a 2D co-op submarine simulator – in space, with survival horror and RPG elements. Steer your submarine, complete missions, fight monsters, fix leaks, operate machinery, man the guns and craft items, and stay alert: danger in Barotrauma doesn’t announce itself!
- 6
Darkwater
Single-player alternative to Sea Of Madness — playable solo, no multiplayer required. Shares Action and Indie with Sea Of Madness.
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.
- 7
The Trench
Single-player alternative to Sea Of Madness — playable solo, no multiplayer required. Shares Action and Indie with Sea Of Madness.
As captain of the Pandora sub, you must explore the Trench and retrieve data from the Neptune wreckage. But beware - the trench is home to unimaginable horrors that will test your courage. Can you survive the terrors of the deep and complete your mission, or will you become the next victim?
- 8
Subterror
Single-player alternative to Sea Of Madness — playable solo, no multiplayer required. Shares Action and Indie with Sea Of Madness.
Explore abandoned biospheres at the bottom of the ocean, alone or with up to 4 friends.