Games like Cat in the Box
Games like Cat in the Box include Sally Face - Episode One, DISTRAINT: Deluxe Edition, Poppy Playtime, Firework, and OMORI. We matched them by the tags players give Cat in the Box on Steam (Horror, Adventure, Mystery, Pixel Graphics, and Indie): closest matches first, and among equally close ones the better-known games.

Sally Face - Episode One
Shared: Horror · Indie · Psychological Horror

DISTRAINT: Deluxe Edition
Shared: Horror · Indie · Pixel Graphics

Poppy Playtime
Shared: Horror · Mystery · Psychological Horror

Firework
Shared: Horror · Indie · Mystery

OMORI
Shared: Psychological Horror · Pixel Graphics · Indie

Tales of the Black Forest
Shared: Horror · Pixel Graphics · Adventure

The Witch's House MV
Shared: Horror · Pixel Graphics · Indie

Little Nightmares
Shared: Horror · Adventure · Indie

Mad Father
Shared: Horror · Pixel Graphics · Psychological Horror

Little Nightmares II
Shared: Horror · Adventure · Psychological Horror

Fran Bow
Shared: Horror · Psychological Horror · Adventure

The Rewinder
Shared: Adventure · Mystery · Pixel Graphics

OneShot
Shared: Pixel Graphics · Indie · Story Rich

Detention
Shared: Horror · Indie · Psychological Horror

What Remains of Edith Finch
Shared: Mystery · Adventure · Story Rich

Rusty Lake Paradise
Shared: Adventure · Horror · Indie

Ib
Shared: Horror · Pixel Graphics · Indie

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

Angels of Death
Shared: Horror · Pixel Graphics · 2D

The Hex
Shared: Indie · Mystery · Pixel Graphics

MiSide
Shared: Horror · Psychological Horror · Story Rich

Oxenfree
Shared: Mystery · Adventure · Horror

Outer Wilds
Shared: Mystery · Adventure · Story Rich

Firewatch
Shared: Adventure · Mystery · Story Rich