Games like HUMDLE
Games like HUMDLE include OneShot, LIMBO, Stray, DISTRAINT: Deluxe Edition, and Five Nights at Freddy's: Into the Pit. We matched them by the tags players give HUMDLE on Steam (Adventure, 2D, Pixel Graphics, Atmospheric, and Dark): closest matches first, and among equally close ones the better-known games.

OneShot
Shared: Pixel Graphics · Atmospheric · Adventure

LIMBO
Shared: 2D · Adventure · Dark

Stray
Shared: Adventure · Atmospheric · Singleplayer

DISTRAINT: Deluxe Edition
Shared: Pixel Graphics · 2D · Adventure

Five Nights at Freddy's: Into the Pit
Shared: Adventure · Pixel Graphics · 2D

Little Nightmares
Shared: Adventure · Atmospheric · Singleplayer

Rain World
Shared: Atmospheric · Pixel Graphics · 2D

Terraria
Shared: 2D · Adventure · Pixel Graphics

ANIMAL WELL
Shared: Pixel Graphics · Puzzle · 2D

FEZ
Shared: Pixel Graphics · Puzzle · Adventure

Hyper Light Drifter
Shared: Pixel Graphics · Adventure · Atmospheric

Little Nightmares II
Shared: Adventure · Singleplayer · Dark

The Rewinder
Shared: Adventure · Pixel Graphics · 2D

Hollow Knight
Shared: 2D · Adventure · Singleplayer

FAR: Lone Sails
Shared: Adventure · Atmospheric · Singleplayer

Hollow Knight: Silksong
Shared: 2D · Indie · Singleplayer

INMOST
Shared: Adventure · Pixel Graphics · Atmospheric

GRIS
Shared: Atmospheric · Adventure · Indie

Chants of Sennaar
Shared: Adventure · Puzzle · Singleplayer

Papers, Please
Shared: Pixel Graphics · Singleplayer · Indie

Sally Face - Episode One
Shared: Adventure · Dark · Indie

There Is No Game: Wrong Dimension
Shared: Adventure · Pixel Graphics · Puzzle

Seen
Shared: Adventure · Dark · Singleplayer

Look Outside
Shared: Pixel Graphics · Adventure · 2D