Games like CollapsingWorldGuildmaster
Games like CollapsingWorldGuildmaster include Portal, LIMBO, Portal 2, Little Nightmares, and ANIMAL WELL. We matched them by the tags players give CollapsingWorldGuildmaster on Steam (Puzzle, Atmospheric, Collectathon, Puzzle Platformer, and Lore-Rich): closest matches first, and among equally close ones the better-known games.

Portal
Shared: Puzzle · Puzzle Platformer · 3D Platformer

LIMBO
Shared: Puzzle · Puzzle Platformer · Atmospheric

Portal 2
Shared: Puzzle · Puzzle Platformer · Platformer

Little Nightmares
Shared: Atmospheric · Puzzle · Puzzle Platformer

ANIMAL WELL
Shared: Puzzle · Puzzle Platformer · Atmospheric

Planet of Lana
Shared: Atmospheric · Puzzle Platformer · Puzzle

Viewfinder
Shared: Puzzle · Puzzle Platformer · Atmospheric

The Talos Principle 2
Shared: Puzzle · Puzzle Platformer · Lore-Rich

DARK SOULS™ III
Shared: Atmospheric · Lore-Rich · RPG

Trine 3: The Artifacts of Power
Shared: Puzzle Platformer · Puzzle · 3D Platformer

Human Fall Flat
Shared: Puzzle · Puzzle Platformer · Sandbox

The Pedestrian
Shared: Puzzle · Puzzle Platformer · Atmospheric

INSIDE
Shared: Atmospheric · Puzzle Platformer · Puzzle

Seen
Shared: Puzzle · Atmospheric · Puzzle Platformer

COCOON
Shared: Puzzle · Atmospheric · Puzzle Platformer

Trine 2: Complete Story
Shared: Puzzle Platformer · Puzzle · Platformer

Supraland
Shared: Puzzle Platformer · Puzzle · Collectathon

Pumpkin Jack
Shared: Collectathon · 3D Platformer · Atmospheric

Shady Part of Me
Shared: Puzzle · Atmospheric · Puzzle Platformer

Yooka-Replaylee
Shared: Puzzle · Collectathon · 3D Platformer

Moncage
Shared: Puzzle · Atmospheric · Indie

The Last Campfire
Shared: Puzzle · Atmospheric · Puzzle Platformer

Dungeons of Hinterberg
Shared: Puzzle · Atmospheric · Dungeon Crawler

Defy Gravity Extended
Shared: Puzzle · Puzzle Platformer · Platformer