Games like Tetragon
Games like Tetragon include LIMBO, The Last Campfire, Little Nightmares, Zup! S, and Zup! F. We matched them by the tags players give Tetragon on Steam (Puzzle, Atmospheric, Puzzle Platformer, Casual, and Physics): closest matches first, and among equally close ones the better-known games.

LIMBO
Shared: Puzzle · Puzzle Platformer · Atmospheric

The Last Campfire
Shared: Puzzle · Atmospheric · Adventure

Little Nightmares
Shared: Atmospheric · Puzzle Platformer · Puzzle

Zup! S
Shared: Puzzle · Casual · Physics

Zup! F
Shared: Puzzle · Casual · Physics

GRIS
Shared: Atmospheric · Adventure · Singleplayer

Viewfinder
Shared: Puzzle · Puzzle Platformer · Singleplayer

Zup! 2
Shared: Puzzle · Casual · Physics

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

Strange Jigsaws
Shared: Puzzle · Casual · Adventure

Zup!
Shared: Puzzle · Casual · Physics

Zup! 8
Shared: Puzzle · Casual · Physics

Spirit of the North
Shared: Atmospheric · Puzzle · Adventure

Stray
Shared: Atmospheric · Adventure · Puzzle

Human Fall Flat
Shared: Puzzle · Physics · Puzzle Platformer

Portal
Shared: Puzzle · Puzzle Platformer · Singleplayer

Hook
Shared: Puzzle · Casual · Singleplayer

Little Nightmares II
Shared: Puzzle · Atmospheric · Adventure

Planet of Lana
Shared: Puzzle Platformer · Atmospheric · Puzzle

The Bridge
Shared: Puzzle Platformer · Puzzle · Physics

Zup! X
Shared: Puzzle · Casual · Physics

Is This Seat Taken?
Shared: Puzzle · Casual · Logic

INSIDE
Shared: Atmospheric · Puzzle Platformer · Singleplayer

Unravel
Shared: Puzzle · Atmospheric · Adventure