Games like Just Stack
Games like Just Stack include Moncage, World of Goo, Portal, Zup! S, and Gorogoa. We matched them by the tags players give Just Stack on Steam (Casual, Puzzle, 3D Platformer, Realistic, and Surreal): closest matches first, and among equally close ones the better-known games.

Moncage
Shared: Casual · Puzzle · Surreal

World of Goo
Shared: Puzzle · Casual · Physics

Portal
Shared: Puzzle · 3D Platformer · Singleplayer

Zup! S
Shared: Casual · Puzzle · Indie

Gorogoa
Shared: Puzzle · Casual · Indie

LIMBO
Shared: Puzzle · Indie · Atmospheric

Viewfinder
Shared: Puzzle · Surreal · Singleplayer

Little Inferno
Shared: Casual · Puzzle · Indie

The Room
Shared: Puzzle · Atmospheric · Singleplayer

Donut County
Shared: Casual · Puzzle · Indie

Zup! F
Shared: Casual · Puzzle · Indie

Shady Part of Me
Shared: Puzzle · Indie · Atmospheric

Zup!
Shared: Casual · Puzzle · Indie

Spirit of the North
Shared: Puzzle · Casual · Atmospheric

Glass Masquerade
Shared: Puzzle · Casual · Atmospheric

Assemble with Care
Shared: Casual · Puzzle · Indie

A Story About My Uncle
Shared: Atmospheric · 3D Platformer · Puzzle

The Last Campfire
Shared: Puzzle · Atmospheric · Singleplayer

OneShot
Shared: Puzzle · Indie · Atmospheric

Zup! 2
Shared: Casual · Puzzle · Indie

Zup! X
Shared: Casual · Puzzle · Indie

Antichamber
Shared: Puzzle · Surreal · Indie

Monument Valley 3
Shared: Casual · Puzzle · Atmospheric

Portal 2
Shared: Puzzle · Singleplayer · 3D Platformer