Games like Delineation
Games like Delineation include Moncage, Zup! S, Donut County, Little Inferno, and Gorogoa. We matched them by the tags players give Delineation on Steam (Casual, Singleplayer, Puzzle, 3D, and Space): closest matches first, and among equally close ones the better-known games.

Moncage
Shared: Casual · Puzzle · Singleplayer

Zup! S
Shared: Casual · Puzzle · Indie

Donut County
Shared: Casual · Puzzle · Indie

Little Inferno
Shared: Casual · Puzzle · Singleplayer

Gorogoa
Shared: Puzzle · Singleplayer · Casual

Sizeable
Shared: Casual · Puzzle · Singleplayer

Assemble with Care
Shared: Casual · Puzzle · Indie

Defy Gravity Extended
Shared: Puzzle · Indie · Singleplayer

Waveform
Shared: Puzzle · Casual · Singleplayer

Hexcells
Shared: Casual · Puzzle · Singleplayer

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

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

Baba Is You
Shared: Puzzle · Singleplayer · Indie

Unpacking
Shared: Casual · Puzzle · Singleplayer

Monument Valley
Shared: Puzzle · Singleplayer · Casual

COCOON
Shared: Puzzle · Indie · Singleplayer

Mountain
Shared: Casual · Singleplayer · Indie

Outer Wilds
Shared: Space · Puzzle · Singleplayer

World of Goo
Shared: Puzzle · Singleplayer · Casual

The Room
Shared: Puzzle · Singleplayer · Indie

Hook
Shared: Casual · Puzzle · Singleplayer

Zup!
Shared: Casual · Puzzle · Indie

Boxes: Lost Fragments
Shared: Puzzle · Casual · 3D

Intergalactic Bubbles
Shared: Casual · Puzzle · Singleplayer