Games like CrystalStack
Games like CrystalStack include Zup! S, Hozy, Donut County, Garry's Mod, and Librarian: Tidy Up the Arcane Library!. We matched them by the tags players give CrystalStack on Steam (Casual, Puzzle, 3D, Realistic, and Physics): closest matches first, and among equally close ones the better-known games.

Zup! S
Shared: Casual · Puzzle · Physics

Hozy
Shared: Casual · Puzzle · Relaxing

Donut County
Shared: Casual · Puzzle · Indie

Garry's Mod
Shared: Casual · Physics · Building

Librarian: Tidy Up the Arcane Library!
Shared: Casual · Puzzle · Singleplayer

World of Goo
Shared: Puzzle · Casual · Physics

Zup!
Shared: Casual · Puzzle · Physics

Sizeable
Shared: Casual · Puzzle · 3D

ISLANDERS
Shared: Puzzle · Relaxing · Building

Zup! F
Shared: Casual · Puzzle · Physics

Zup! 2
Shared: Casual · Puzzle · Physics

Zup! X
Shared: Casual · Puzzle · Physics

Zup! 3
Shared: Casual · Puzzle · Physics

Mini Motorways
Shared: Casual · Puzzle · Indie

Assemble with Care
Shared: Casual · Puzzle · Indie

Poly Bridge
Shared: Puzzle · Physics · Building

Unpacking
Shared: Casual · Puzzle · Relaxing

Tricky Towers
Shared: Puzzle · Casual · Physics

Zup! 8
Shared: Casual · Puzzle · Physics

PC Building Simulator
Shared: Building · 3D · Realistic

Monument Valley
Shared: Puzzle · Casual · Singleplayer

DrainSim
Shared: Casual · 3D · Physics

Zup! Z
Shared: Puzzle · Casual · Indie

Gas Station Simulator
Shared: Casual · Singleplayer · Building