Games like Little Horrors!
Games like Little Horrors! include Papers, Please, KinitoPET, That's not my Neighbor, Lobotomy Corporation | Monster Management Simulation, and Five Nights at Freddy's: Into the Pit. We matched them by the tags players give Little Horrors! on Steam (Horror, Singleplayer, Simulation, Multiple Endings, and Time Management): closest matches first, and among equally close ones the better-known games.

Papers, Please
Shared: Simulation · Singleplayer · Indie

KinitoPET
Shared: Horror · Multiple Endings · Indie

That's not my Neighbor
Shared: Horror · Simulation · Point & Click

Lobotomy Corporation | Monster Management Simulation
Shared: Horror · Simulation · Singleplayer

Five Nights at Freddy's: Into the Pit
Shared: Horror · Singleplayer · Multiple Endings

People Playground
Shared: Singleplayer · Simulation · Gore

No, I'm not a Human
Shared: Horror · Singleplayer · Multiple Endings

The Test
Shared: Simulation · Multiple Endings · Singleplayer

Five Nights at Freddy's
Shared: Horror · Singleplayer · Indie

Please, Don’t Touch Anything
Shared: Singleplayer · Multiple Endings · Indie

CARRION
Shared: Horror · Gore · Singleplayer

Cookie Clicker
Shared: Horror · Indie · Pixel Graphics

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

Home Safety Hotline
Shared: Horror · Simulation · 1990's

Undertale
Shared: Multiple Endings · Singleplayer · Pixel Graphics

Game Dev Tycoon
Shared: Simulation · Singleplayer · Indie

American Arcadia
Shared: Singleplayer · Horror · Simulation

Touhou Mystia's Izakaya
Shared: Simulation · Time Management · Pixel Graphics

Look Outside
Shared: Horror · Lovecraftian · Pixel Graphics

Papa's Freezeria Deluxe
Shared: Simulation · Time Management · Singleplayer

House
Shared: Horror · Singleplayer · Multiple Endings

DISTRAINT: Deluxe Edition
Shared: Horror · Indie · Singleplayer

WORLD OF HORROR
Shared: Horror · Lovecraftian · Point & Click

Emily is Away Too
Shared: Simulation · Indie · Singleplayer