72%Strong matchForgotten Seas
76%39576% positive reviews, Mostly Positive across 395 reviews·Pirates · Combat
—







NightMariners is a co-op horror adventure game where you sail across dark seas, explore cursed islands, and enter dangerous caves.
NightMariners is a co-op horror adventure game set across dark seas, cursed islands, and dangerous caves.
Sail with your crew, reach mysterious islands, and enter deep caves by raft. Your goal is to find lost Core Fragments and bring them safely back to your ship.
But once a Core Fragment is taken, the island begins to change. Lights start to fail, navigation becomes harder, and creatures begin closing in. To survive, your crew must stay together, protect the carrier, and return to the ship before the darkness overwhelms you.
Key Features:
Co-op Horror Experience:
Play with your friends, complete missions as a crew, and try to survive dangerous islands together.
Ship and Raft Travel:
Sail across dark seas with your ship, reach mysterious islands, and continue deeper into caves by raft.
Core Fragment Missions:
Find lost Core Fragments, carry them back, and deliver them safely to your ship.
Rising Danger:
After taking a Core Fragment, the island becomes more hostile. Lights weaken, paths become harder to follow, and creature pressure increases.
Cave Exploration:
Explore dark, foggy, and dangerous caves. Stay alert and do not lose your way.
Teamwork:
Who will carry the fragment? Who will guide the way? Who will protect the crew? Every role matters.
Dark Atmosphere:
Experience rough seas, dim lights, cursed islands, and tense cave environments filled with danger.
In NightMariners, finding the fragment is only the beginning. Bringing it back is the real test.
Steam data © 2026 Valve Corporation. Trademarks are property of their respective owners.
All matches
Finding similar games…
Forgotten SeasShares Online Co-op · Pirates · PvE , adds Base Building76% · 395 positive reviews72%Strong match—
Lethal CompanyShares Online Co-op · Survival Horror · PvE , adds First-Person97% · 511k positive reviews72%Strong match—
DarkwaterShares Online Co-op · Survival Horror · Naval , adds Survival78% · 1k positive reviews73%Strong match—
Murky DiversShares Online Co-op · Survival Horror · PvE , adds Funny87% · 3k positive reviews70%Strong match—
SubterrorShares Online Co-op · Survival Horror · PvE , adds First-Person91% · 380 positive reviews67%Strong match—
Dark HoursShares Online Co-op · Survival Horror · PvE , adds Heist84% · 2k positive reviews70%Strong match—All matches
The best games like Nightmariners are Forgotten Seas, Lethal Company, Darkwater, Murky Divers, and Subterror.
Match on: filter matches for Nightmariners by tag
Filters all matches
65%+Strong matches
50%+Good matches