Games like GIRL.EXE
Games like GIRL.EXE include Escape the Backrooms, Lethal Company, RV There Yet?, Phasmophobia, and Little Nightmares II. We matched them by the tags players give GIRL.EXE on Steam (Funny, Adventure, Psychological Horror, Singleplayer, and Horror): closest matches first, and among equally close ones the better-known games.

Escape the Backrooms
Shared: Psychological Horror · Horror · Co-op

Lethal Company
Shared: Funny · Co-op · Horror

RV There Yet?
Shared: Funny · Co-op · Adventure

Phasmophobia
Shared: Psychological Horror · Horror · Co-op

Little Nightmares II
Shared: Adventure · Horror · Singleplayer

Zort
Shared: Funny · Co-op · Horror

Outlast
Shared: Horror · Psychological Horror · First-Person

Inside the Backrooms
Shared: Horror · Psychological Horror · Co-op

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

PEAK
Shared: Adventure · Co-op · Multiplayer

Ready or Not
Shared: Singleplayer · Co-op · Multiplayer

The Outlast Trials
Shared: Co-op · Horror · Psychological Horror

R.E.P.O.
Shared: Horror · Co-op · Multiplayer

Subnautica 2
Shared: Horror · Multiplayer · Co-op

Content Warning
Shared: Horror · Funny · Co-op

Nuclear Nightmare
Shared: Co-op · Psychological Horror · Horror

DEVOUR
Shared: Horror · Co-op · Psychological Horror

Outlast 2
Shared: Psychological Horror · Horror · Singleplayer

Poppy Playtime
Shared: Singleplayer · Horror · Psychological Horror

MiSide
Shared: Psychological Horror · Horror · Singleplayer

Demonologist
Shared: Psychological Horror · Horror · Co-op

Blood and Bacon
Shared: Funny · Multiplayer · Co-op

The Headliners
Shared: Funny · Co-op · Horror

Little Nightmares III
Shared: Adventure · Co-op · Horror