Games like Duck Block
Games like Duck Block include Braid, LIMBO, Planet of Lana, Trine 2: Complete Story, and Defy Gravity Extended. We matched them by the tags players give Duck Block on Steam (Puzzle Platformer, Casual, 2D Platformer, Puzzle, and Platformer): 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

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

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

Defy Gravity Extended
Shared: Puzzle Platformer · Platformer · Puzzle

FEZ
Shared: Puzzle · Platformer · Pixel Graphics

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

Celeste
Shared: Pixel Graphics · 2D Platformer · Platformer

SANABI
Shared: Pixel Graphics · 2D Platformer · Action

Katana ZERO
Shared: Pixel Graphics · Action · Platformer

Portal 2
Shared: Puzzle · Platformer · Puzzle Platformer

Öoo
Shared: Puzzle Platformer · 2D Platformer · Puzzle

ANIMAL WELL
Shared: Puzzle Platformer · Puzzle · Pixel Graphics

Skul: The Hero Slayer
Shared: Action · Pixel Graphics · Indie

Out There Somewhere
Shared: Platformer · Puzzle · Pixel Graphics

Super Meat Boy
Shared: Platformer · 2D Platformer · Pixel Graphics

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

Pizza Tower
Shared: 2D Platformer · Platformer · Pixel Graphics

Broforce
Shared: Pixel Graphics · Action · Platformer

ElecHead
Shared: Puzzle Platformer · Puzzle · Platformer

PICO PARK
Shared: Puzzle Platformer · Casual · Platformer

Toki Tori
Shared: Casual · Puzzle · Platformer

Nihilumbra
Shared: Casual · Puzzle Platformer · Puzzle

Hue
Shared: Puzzle Platformer · Puzzle · Platformer