Games like Climb The Backrooms
Games like Climb The Backrooms include Portal 2, Chained Together, Portal, LIMBO, and Human Fall Flat. We matched them by the tags players give Climb The Backrooms on Steam (Adventure, Casual, Platformer, Puzzle, and 3D Platformer): closest matches first, and among equally close ones the better-known games.

Portal 2
Shared: Platformer · Puzzle · First-Person

Chained Together
Shared: Adventure · Platformer · Casual

Portal
Shared: Puzzle · Puzzle Platformer · 3D Platformer

LIMBO
Shared: Platformer · Puzzle · Puzzle Platformer

Human Fall Flat
Shared: Puzzle · Adventure · Puzzle Platformer

Little Nightmares II
Shared: Adventure · Puzzle · Horror

Little Nightmares
Shared: Adventure · Puzzle Platformer · Puzzle

Biped
Shared: Puzzle · Adventure · Puzzle Platformer

Liars Bar
Shared: Casual · 3D · First-Person

It Takes Two
Shared: Adventure · Puzzle · Puzzle Platformer

POPUCOM
Shared: Adventure · Platformer · Casual

Inside the Backrooms
Shared: Puzzle · Adventure · Horror

Pikuniku
Shared: Adventure · Casual · Puzzle

Carry The Glass
Shared: Adventure · Puzzle Platformer · Platformer

PEAK
Shared: Adventure · First-Person · 3D

RV There Yet?
Shared: Adventure · Funny · First-Person

A Story About My Uncle
Shared: Adventure · Platformer · First-Person

Refunct
Shared: 3D Platformer · Casual · Platformer

Little Nightmares III
Shared: Adventure · Puzzle · Platformer

Viewfinder
Shared: Puzzle · Puzzle Platformer · Adventure

Quantum Conundrum
Shared: Puzzle · Puzzle Platformer · 3D Platformer

Buckshot Roulette
Shared: Dark · First-Person · Horror

Big Walk
Shared: Puzzle · Adventure · Casual

Gorilla Tag
Shared: First-Person · 3D Platformer · 3D