Games like Deja Vu
Games like Deja Vu include Portal 2, Portal, LIMBO, INSIDE, and Little Nightmares. We matched them by the tags players give Deja Vu on Steam (Puzzle Platformer, Puzzle, Sci-fi, Adventure, and Experimental): closest matches first, and among equally close ones the better-known games.

Portal 2
Shared: Puzzle · Puzzle Platformer · Platformer

Portal
Shared: Puzzle Platformer · Puzzle · Sci-fi

LIMBO
Shared: Puzzle Platformer · Puzzle · Platformer

INSIDE
Shared: Puzzle Platformer · 2.5D · Adventure

Little Nightmares
Shared: Puzzle Platformer · Adventure · Puzzle

Seen
Shared: Puzzle · Adventure · Puzzle Platformer

COCOON
Shared: Puzzle · Adventure · Puzzle Platformer

FEZ
Shared: Puzzle · Platformer · Adventure

Mind Over Magnet
Shared: Puzzle Platformer · Puzzle · Adventure

Braid
Shared: Puzzle Platformer · Puzzle · Time Manipulation

Max: The Curse of Brotherhood
Shared: Puzzle Platformer · Adventure · Puzzle

Defy Gravity Extended
Shared: Puzzle Platformer · Puzzle · Platformer

Human Fall Flat
Shared: Puzzle · Puzzle Platformer · Adventure

FAR: Lone Sails
Shared: Adventure · Puzzle · 2.5D

Out There Somewhere
Shared: Puzzle · Platformer · Adventure

Little Nightmares II
Shared: Puzzle · Adventure · Puzzle Platformer

Viewfinder
Shared: Puzzle Platformer · Puzzle · Adventure

Oddworld: New 'n' Tasty
Shared: Puzzle Platformer · Adventure · Puzzle

Planet of Lana
Shared: Puzzle Platformer · Puzzle · Adventure

FAR: Changing Tides
Shared: Puzzle Platformer · Puzzle · Adventure

The Swapper
Shared: Puzzle · Sci-fi · Puzzle Platformer

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

ElecHead
Shared: Puzzle Platformer · Puzzle · Platformer

Supraland
Shared: Puzzle Platformer · Adventure · Puzzle