Games like Plumb
Games like Plumb include LIMBO, COCOON, Moncage, Donut County, and Human Fall Flat. We matched them by the tags players give Plumb on Steam (Casual, Adventure, Puzzle, 3D, and Minimalist): closest matches first, and among equally close ones the better-known games.

LIMBO
Shared: Puzzle · Puzzle Platformer · Adventure

COCOON
Shared: Adventure · Puzzle · 3D

Moncage
Shared: Casual · Puzzle · Adventure

Donut County
Shared: Casual · Puzzle · Adventure

Human Fall Flat
Shared: Puzzle · Adventure · Puzzle Platformer

Chants of Sennaar
Shared: Adventure · Puzzle · Colorful

Strange Jigsaws
Shared: Casual · Adventure · Puzzle

There Is No Game: Wrong Dimension
Shared: Puzzle · Adventure · Casual

Little Nightmares
Shared: Adventure · Puzzle · Atmospheric

Little Inferno
Shared: Casual · Puzzle · Comedy

Brothers - A Tale of Two Sons
Shared: Adventure · Puzzle · Atmospheric

The Unfinished Swan
Shared: Adventure · Puzzle · Casual

Pikuniku
Shared: Adventure · Casual · Puzzle

Zup! 2
Shared: Casual · Puzzle · Minimalist

The Last Campfire
Shared: Adventure · Puzzle · Atmospheric

INSIDE
Shared: Puzzle Platformer · Atmospheric · Adventure

Sizeable
Shared: Casual · Puzzle · 3D

Monument Valley
Shared: Puzzle · Adventure · Casual

GRIS
Shared: Adventure · Atmospheric · Indie

PEAK
Shared: Adventure · 3D · Comedy

Boxes: Lost Fragments
Shared: Puzzle · Adventure · Casual

Portal
Shared: Puzzle · Puzzle Platformer · Comedy

The Room
Shared: Puzzle · Adventure · Atmospheric

Zup! F
Shared: Casual · Puzzle · Minimalist