Games like Reality Rifts
Games like Reality Rifts include Portal 2, Supraland, Portal, Chained Together, and Human Fall Flat. We matched them by the tags players give Reality Rifts on Steam (Adventure, 3D Platformer, Puzzle, FPS, and Puzzle Platformer): closest matches first, and among equally close ones the better-known games.

Portal 2
Shared: Puzzle · Puzzle Platformer · 3D Platformer

Supraland
Shared: Adventure · Puzzle Platformer · Exploration

Portal
Shared: Puzzle · 3D Platformer · Puzzle Platformer

Chained Together
Shared: Adventure · 3D Platformer · Puzzle Platformer

Human Fall Flat
Shared: Puzzle · Adventure · Physics

Viewfinder
Shared: Puzzle · Puzzle Platformer · Adventure

COCOON
Shared: Adventure · Puzzle · Exploration

The Ball
Shared: 3D Platformer · Puzzle · Puzzle Platformer

PEAK
Shared: Adventure · Exploration · Physics

The Talos Principle 2
Shared: Puzzle · Puzzle Platformer · 3D Platformer

LIMBO
Shared: Puzzle · Puzzle Platformer · Adventure

Quantum Conundrum
Shared: 3D Platformer · Puzzle · Puzzle Platformer

Slime Rancher
Shared: Adventure · Exploration · First-Person

Refunct
Shared: 3D Platformer · Puzzle Platformer · Adventure

Neon White
Shared: 3D Platformer · FPS · Platformer

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

FEZ
Shared: Puzzle · Adventure · Exploration

ANIMAL WELL
Shared: Puzzle · Exploration · Puzzle Platformer

Superliminal
Shared: Puzzle · Physics · Adventure

Supraland Six Inches Under
Shared: Adventure · Puzzle Platformer · Puzzle

Biped
Shared: Puzzle · Adventure · Physics

BONEWORKS
Shared: Physics · Adventure · Puzzle

A Story About My Uncle
Shared: Adventure · 3D Platformer · Puzzle

The Big Catch: Tacklebox
Shared: Adventure · 3D Platformer · Exploration