Games like Escape The Abyss
Games like Escape The Abyss include Subnautica, Subnautica: Below Zero, Subnautica 2, DREDGE, and DIVE or DIE - Children of Rain. We matched them by the tags players give Escape The Abyss on Steam (Adventure, Underwater, Exploration, Extraction Shooter, and Lovecraftian): closest matches first, and among equally close ones the better-known games.

Subnautica
Shared: Underwater · Exploration · Adventure

Subnautica: Below Zero
Shared: Underwater · Exploration · Adventure

Subnautica 2
Shared: Underwater · Exploration · Adventure

DREDGE
Shared: Exploration · Adventure · Lovecraftian

DIVE or DIE - Children of Rain
Shared: Underwater · Exploration · Lovecraftian

SOMA
Shared: Exploration · Psychological Horror · Survival Horror

The Forest
Shared: Adventure · Survival Horror · Exploration

Pacific Drive
Shared: Exploration · Adventure · Survival Horror

Iron Lung
Shared: Underwater · Submarine · Psychological Horror

Escape From Duckov
Shared: Adventure · Extraction Shooter · Exploration

Lethal Company
Shared: Exploration · Survival Horror · Psychological Horror

Sons Of The Forest
Shared: Survival Horror · Base Building · Adventure

The Long Dark
Shared: Exploration · Adventure · Open World Survival Craft

SIGNALIS
Shared: Survival Horror · Psychological Horror · Lovecraftian

7 Days to Die
Shared: Base Building · Exploration · Adventure

Sunkenland
Shared: Underwater · Adventure · Exploration

Fallout 4
Shared: Exploration · Adventure · Post-apocalyptic

Dune: Awakening
Shared: Exploration · Adventure · Base Building

DAVE THE DIVER
Shared: Adventure · Exploration · Underwater

Inside the Backrooms
Shared: Survival Horror · Adventure · Exploration

Still Wakes the Deep
Shared: Lovecraftian · Psychological Horror · Adventure

Under The Waves
Shared: Adventure · Underwater · Exploration

No Man's Sky
Shared: Exploration · Adventure · Sci-fi

Darkwood
Shared: Adventure · Survival Horror · Psychological Horror