Games like UNRUSH
Games like UNRUSH include Braid, LIMBO, The Pedestrian, Trine 2: Complete Story, and Thomas Was Alone. We matched them by the tags players give UNRUSH on Steam (Puzzle Platformer, Side Scroller, 2D Platformer, Strategy, and Puzzle): closest matches first, and among equally close ones the better-known games.

Braid
Shared: Puzzle Platformer · 2D Platformer · Puzzle

LIMBO
Shared: Puzzle Platformer · Puzzle · Platformer

The Pedestrian
Shared: Puzzle Platformer · Side Scroller · Puzzle

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

Thomas Was Alone
Shared: Side Scroller · 2D Platformer · Puzzle Platformer

Planet of Lana
Shared: Puzzle Platformer · 2D Platformer · Puzzle

Moonleap
Shared: Puzzle Platformer · Puzzle · Platformer

Mind Over Magnet
Shared: Puzzle Platformer · Puzzle · 2D Platformer

The Bridge
Shared: Puzzle Platformer · Puzzle · 2D

Öoo
Shared: Puzzle Platformer · 2D Platformer · Puzzle

Webbed
Shared: 2D Platformer · Puzzle Platformer · 2D

Creepy Tale
Shared: Puzzle Platformer · 2D Platformer · Puzzle

Laughing to Die
Shared: 2D Platformer · Puzzle · Puzzle Platformer

Hue
Shared: Puzzle Platformer · Puzzle · Platformer

Defy Gravity Extended
Shared: Puzzle Platformer · Platformer · Puzzle

Lost Words: Beyond the Page
Shared: Side Scroller · Puzzle Platformer · 2D Platformer

Portal 2
Shared: Puzzle · Platformer · Puzzle Platformer

Trine Enchanted Edition
Shared: Puzzle Platformer · 2D Platformer · Strategy

Toki Tori
Shared: Puzzle · Platformer · Puzzle Platformer

Neva
Shared: Platformer · Puzzle · 2D Platformer

Knock-knock
Shared: Side Scroller · 2D Platformer · Puzzle

FEZ
Shared: Puzzle · Platformer · Puzzle Platformer

Squishy the Suicidal Pig
Shared: Puzzle Platformer · Puzzle · Platformer

ElecHead
Shared: Puzzle Platformer · Puzzle · Platformer