Games like SONAR
Games like SONAR include Lethal Company, Outlast, Alien: Isolation, Black Mesa, and Half-Life 2. We matched them by the tags players give SONAR on Steam (Atmospheric, Horror, First-Person, Adventure, and Sci-fi): closest matches first, and among equally close ones the better-known games.

Lethal Company
Shared: Horror · First-Person · Atmospheric

Outlast
Shared: Horror · First-Person · Atmospheric

Alien: Isolation
Shared: Horror · Atmospheric · Sci-fi

Black Mesa
Shared: First-Person · Sci-fi · Action

Half-Life 2
Shared: Sci-fi · Action · First-Person

SOMA
Shared: Horror · Atmospheric · Sci-fi

Poppy Playtime
Shared: Horror · First-Person · Singleplayer

Prey
Shared: Sci-fi · Horror · Atmospheric

Half-Life: Alyx
Shared: Horror · First-Person · Atmospheric

BioShock™ Remastered
Shared: Atmospheric · Horror · First-Person

BioShock™
Shared: Atmospheric · Horror · Action

Dead Space (2008)
Shared: Horror · Sci-fi · Atmospheric

The Forest
Shared: Horror · Adventure · First-Person

METRO Last Light Redux
Shared: Atmospheric · Horror · Action

Little Nightmares
Shared: Atmospheric · Horror · Adventure

Bendy and the Dark Revival
Shared: Horror · First-Person · Adventure

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

PEAK
Shared: Adventure · First-Person · Atmospheric

Thief
Shared: First-Person · Adventure · Action

Resident Evil Village
Shared: Horror · First-Person · Action

ROUTINE
Shared: Atmospheric · Sci-fi · Horror

BioShock Infinite
Shared: First-Person · Action · Adventure

Content Warning
Shared: Horror · Action Roguelike · Procedural Generation

Resident Evil 7 Biohazard
Shared: Horror · First-Person · Atmospheric