Games like As Long As She Forgot
Games like As Long As She Forgot include Mouthwashing, What Remains of Edith Finch, SOMA, Firewatch, and Layers of Fear (2016). We matched them by the tags players give As Long As She Forgot on Steam (Horror, Psychological Horror, Walking Simulator, Story Rich, and Dark): closest matches first, and among equally close ones the better-known games.

Mouthwashing
Shared: Horror · Psychological Horror · Story Rich

What Remains of Edith Finch
Shared: Story Rich · Walking Simulator · Atmospheric

SOMA
Shared: Horror · Psychological Horror · Story Rich

Firewatch
Shared: Walking Simulator · Story Rich · Atmospheric

Layers of Fear (2016)
Shared: Horror · Psychological Horror · Walking Simulator

Sally Face - Episode One
Shared: Psychological Horror · Horror · Story Rich

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

Amnesia: A Machine For Pigs
Shared: Horror · Walking Simulator · Story Rich

Summer of '58
Shared: Horror · Psychological Horror · Walking Simulator

Still Wakes the Deep
Shared: Horror · Psychological Horror · Walking Simulator

MiSide
Shared: Psychological Horror · Horror · Story Rich

Phasmophobia
Shared: Horror · Psychological Horror · Dark

Poppy Playtime
Shared: Horror · Psychological Horror · Dark

Alan Wake
Shared: Horror · Story Rich · Psychological Horror

Outlast
Shared: Horror · Psychological Horror · Atmospheric

SILENT HILL 2
Shared: Horror · Psychological Horror · Story Rich

Fears to Fathom - Norwood Hitchhike
Shared: Horror · Psychological Horror · Atmospheric

Fears to Fathom - Ironbark Lookout
Shared: Horror · Psychological Horror · Atmospheric

Hellblade: Senua's Sacrifice
Shared: Atmospheric · Story Rich · Horror

Little Nightmares II
Shared: Horror · Psychological Horror · Dark

The Park®
Shared: Horror · Psychological Horror · Walking Simulator

DON'T SCREAM
Shared: Horror · Psychological Horror · Walking Simulator

Visage
Shared: Horror · Psychological Horror · Dark

Dagon: by H. P. Lovecraft
Shared: Horror · Atmospheric · Psychological Horror