Games like Causal Loop
Games like Causal Loop include Portal 2, Outer Wilds, Portal, The Talos Principle, and The Talos Principle 2. We matched them by the tags players give Causal Loop on Steam (Mystery, Puzzle Platformer, Platformer, Puzzle, and Adventure): closest matches first, and among equally close ones the better-known games.

Portal 2
Shared: Platformer · Puzzle · Puzzle Platformer

Outer Wilds
Shared: Mystery · Adventure · Story Rich

Portal
Shared: Puzzle Platformer · Puzzle · First-Person

The Talos Principle
Shared: Puzzle · First-Person · Story Rich

The Talos Principle 2
Shared: Puzzle · Puzzle Platformer · Story Rich

What Remains of Edith Finch
Shared: Mystery · Story Rich · Adventure

Firewatch
Shared: Mystery · Adventure · Story Rich

Ori and the Will of the Wisps
Shared: Platformer · Adventure · Story Rich

Murders on the Yangtze River
Shared: Puzzle · Mystery · Adventure

ANIMAL WELL
Shared: Puzzle · Puzzle Platformer · Platformer

Blue Prince
Shared: Mystery · Puzzle · Story Rich

LIMBO
Shared: Puzzle Platformer · Platformer · Puzzle

Little Nightmares
Shared: Puzzle Platformer · Adventure · Puzzle

Return of the Obra Dinn
Shared: Mystery · Puzzle · Story Rich

Deliver Us The Moon
Shared: Adventure · Mystery · Sci-fi

STAR WARS Jedi: Fallen Order™
Shared: Story Rich · Action-Adventure · Platformer

Seen
Shared: Puzzle · Adventure · Platformer

Little Nightmares II
Shared: Adventure · Puzzle · Story Rich

Tomb Raider Game of the Year
Shared: Adventure · Story Rich · Action

Viewfinder
Shared: Puzzle Platformer · Puzzle · First-Person

Indiana Jones and the Great Circle
Shared: Puzzle · Story Rich · First-Person

Amnesia: Rebirth
Shared: Puzzle · First-Person · Story Rich

INSIDE
Shared: Puzzle Platformer · Story Rich · Atmospheric

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