Games like Into The Abyss
Games like Into The Abyss include Escape the Backrooms, Lethal Company, SILENT HILL: Townfall, Five Nights at Freddy's: Secret of the Mimic, and Five Nights at Freddy's: Security Breach. We matched them by the tags players give Into The Abyss on Steam (Exploration, Hidden Object, Interactive Fiction, Action-Adventure, and 3D): closest matches first, and among equally close ones the better-known games.

Escape the Backrooms
Shared: Horror · Exploration · Psychological Horror

Lethal Company
Shared: Exploration · First-Person · Horror

SILENT HILL: Townfall
Shared: Exploration · Horror · First-Person

Five Nights at Freddy's: Secret of the Mimic
Shared: First-Person · Exploration · Horror

Five Nights at Freddy's: Security Breach
Shared: Horror · Exploration · First-Person

Backrooms: Escape Together
Shared: Horror · Psychological Horror · Exploration

The Forest
Shared: Horror · Exploration · First-Person

Pacify
Shared: Exploration · Horror · Psychological Horror

Inside the Backrooms
Shared: Horror · Exploration · Psychological Horror

A Plague Tale: Requiem
Shared: Exploration · Action-Adventure · Interactive Fiction

Hamster Hunter
Shared: Exploration · Action-Adventure · 3D

Resident Evil Requiem
Shared: Horror · Survival Horror · First-Person

Darkwood
Shared: Horror · Psychological Horror · Exploration

Metel - Horror Escape
Shared: Hidden Object · Horror · 3D

Subnautica 2
Shared: Exploration · Horror · First-Person

Amnesia: A Machine For Pigs
Shared: Exploration · Horror · First-Person

The Outlast Trials
Shared: Horror · First-Person · Psychological Horror

SOMA
Shared: Horror · Exploration · Psychological Horror

Scanner Sombre
Shared: Exploration · Horror · First-Person

Poppy Playtime
Shared: Horror · First-Person · Psychological Horror

Amnesia: Rebirth
Shared: Action-Adventure · First-Person · Exploration

PEAK
Shared: Exploration · First-Person · 3D

SILENT HILL f
Shared: Horror · Psychological Horror · Survival Horror

Hello Neighbor
Shared: Horror · First-Person · Action-Adventure