Games like Post Trauma
Games like Post Trauma include Resident Evil 2, Resident Evil 4, Five Nights at Freddy's: Security Breach, The Last of Us™ Part I, and UNCHARTED™: Legacy of Thieves Collection. We matched them by the tags players give Post Trauma on Steam (Singleplayer, Action-Adventure, Inventory Management, Horror, and Puzzle): closest matches first, and among equally close ones the better-known games.

Resident Evil 2
Shared: Singleplayer · Horror · Gore

Resident Evil 4
Shared: Horror · Singleplayer · Story Rich

Five Nights at Freddy's: Security Breach
Shared: Singleplayer · Horror · Multiple Endings

The Last of Us™ Part I
Shared: Horror · Action-Adventure · Singleplayer

UNCHARTED™: Legacy of Thieves Collection
Shared: Action-Adventure · Singleplayer · Story Rich

Little Nightmares II
Shared: Singleplayer · Horror · Puzzle

Amnesia: Rebirth
Shared: Action-Adventure · Singleplayer · Puzzle

Poppy Playtime
Shared: Singleplayer · Horror · Puzzle

Resident Evil 7 Biohazard
Shared: Singleplayer · Horror · Gore

SILENT HILL 2
Shared: Horror · Story Rich · Singleplayer

SOMA
Shared: Horror · Story Rich · Singleplayer

Resident Evil Requiem
Shared: Horror · Singleplayer · Action-Adventure

INSIDE
Shared: Horror · Singleplayer · Story Rich

Tomb Raider Game of the Year
Shared: Singleplayer · Story Rich · Action-Adventure

Little Nightmares
Shared: Singleplayer · Horror · Puzzle

Resident Evil 4 (2005)
Shared: Inventory Management · Singleplayer · Horror

Rise of the Tomb Raider™
Shared: Singleplayer · Action-Adventure · Story Rich

SILENT HILL f
Shared: Horror · Story Rich · Action-Adventure

Amnesia: The Dark Descent
Shared: Horror · Gore · Puzzle

Resident Evil Village
Shared: Singleplayer · Horror · Gore

Fran Bow
Shared: Horror · Puzzle · Story Rich

The Quarry
Shared: Horror · Multiple Endings · Singleplayer

Bendy and the Dark Revival
Shared: Singleplayer · Horror · Story Rich

No, I'm not a Human
Shared: Horror · Singleplayer · Story Rich