Thalassa: Edge of the Abyss
Games like Thalassa: Edge of the Abyss

Games like Thalassa: Edge of the Abyss

A melancholic first-person underwater mystery about investigating a sunken ship to uncover the fate of your crew, with a slow-burn emotional story.

Under The Waves
A melancholy, story-driven North Sea diving adventure about grief, isolation, and a life-changing choice, with exploration and a submarine, running about 9-11 hours.
2023-08-28
- Action
- Science fiction

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Games like Thalassa: Edge of the Abyss | IndieDex

Thalassa: Edge of the Abyss
Games like Thalassa: Edge of the Abyss

Games like Thalassa: Edge of the Abyss

A melancholic first-person underwater mystery about investigating a sunken ship to uncover the fate of your crew, with a slow-burn emotional story.

Under The Waves
A melancholy, story-driven North Sea diving adventure about grief, isolation, and a life-changing choice, with exploration and a submarine, running about 9-11 hours.
2023-08-28
- Action
- Science fiction

Adventure

Third person

Indie

CRUSH DEPTH

A tight ~3-hour first-person underwater sci-fi horror about a doomed salvage operation, with puzzle-solving and fleeing a monstrous threat in a dread-soaked atmosphere.

2025-11-21

Action
First person
Science fiction
Adventure
Horror
Indie
Simulator

Deep Beyond

A short, story-rich first-person interactive thriller about a sea explorer investigating her father's disappearance, with engaging visuals and voice acting.

2024-05-15

Action
First person
Puzzle
Adventure
Third person
Indie
Simulator

Panthalassa

An atmospheric single-player point-and-click puzzle adventure about an AI exploring an underwater alien world, with a roughly six-hour story driven by otherworldly technology and mystery.

2026-05-17

Adventure
Indie

Lazaret

A single-player first-person horror adventure about investigating a distress signal from a ship missing for four years, offering puzzle-driven, manageable scares in roughly nine hours.

2024-02-20

First person
Puzzle
Adventure
Horror
Indie

Harold Halibut

A slow-paced claymation narrative adventure about exploring a submerged spaceship city and searching for home, with a whimsical, cozy tone and roughly 14 hours of story-rich walking and conversation.

2024-04-16

Science fiction
Adventure
Indie
Side view
Simulator
Mystery
Drama

Stirring Abyss

A single-player tactical squad RPG with underwater exploration, survival mechanics, and Lovecraftian dread; a small reviewer sample logged roughly 16–22 hours.

2020-10-29

Adventure
Horror
Strategy
Third person
Tactical
Indie
Role-playing (RPG)

Narcosis

A tense ~3-hour underwater survival horror in which an industrial diver struggles with oxygen, sanity, and the dark seafloor to reach the surface.

2017-03-28

Action
First person
Adventure
Horror
Survival
Indie
Mystery
Virtual Reality

Beyond Blue

A compact ~4-hour underwater narrative adventure about exploring ocean depths and marine life as a female protagonist, with a chill yet emotional tone.

2020-06-11

Action
Adventure
Third person
Indie
Simulator
Kids

Cthulhu: The Cosmic Abyss

A single-player Lovecraftian investigation game set in a deep-sea mining station, focusing on atmosphere, clue-finding, and puzzle-solving, with mixed reviews over its mechanics.

2026-04-16

First person
Science fiction
Thriller
Adventure
Horror
Mystery

Still Wakes the Deep

A five-hour narrative horror set on a collapsing 1975 oil rig, focusing on atmosphere and story over outright scares.

2024-06-18

Action
First person
Science fiction
Adventure
Horror
Fantasy
Indie
Stealth

Mouthwashing

A tight four-hour psychological horror adventure about a stranded space crew descending into madness.

2024-09-26

First person
Adventure
Horror
Indie

Under The Waves