Games like Piece by Piece
Games like Piece by Piece include Celeste, Baba Is You, LIMBO, Braid, and FEZ. We matched them by the tags players give Piece by Piece on Steam (Puzzle, Cozy, Puzzle Platformer, Pixel Graphics, and Difficult): closest matches first, and among equally close ones the better-known games.

Celeste
Shared: Pixel Graphics · Difficult · Indie

Baba Is You
Shared: Puzzle · Difficult · Pixel Graphics

LIMBO
Shared: Puzzle · Puzzle Platformer · Indie

Braid
Shared: Puzzle · Puzzle Platformer · Indie

FEZ
Shared: Puzzle · Pixel Graphics · Indie

Webbed
Shared: Pixel Graphics · Puzzle Platformer · 2D

Zup! S
Shared: Puzzle · Casual · 2D

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

Is This Seat Taken?
Shared: Puzzle · Cozy · Casual

Defy Gravity Extended
Shared: Puzzle Platformer · Puzzle · Indie

Unpacking
Shared: Puzzle · Pixel Graphics · Casual

A Little to the Left
Shared: Puzzle · Casual · Cozy

Super Meat Boy
Shared: Difficult · Pixel Graphics · Indie

Zup!
Shared: Puzzle · Casual · 2D

Toki Tori
Shared: Puzzle · Casual · Indie

ANIMAL WELL
Shared: Puzzle · Pixel Graphics · Puzzle Platformer

Zup! X
Shared: Puzzle · Casual · 2D

Zup! F
Shared: Puzzle · Casual · 2D

Zup! 6
Shared: Puzzle · Casual · 2D

Zup! 3
Shared: Puzzle · Casual · 2D

Zup! 2
Shared: Puzzle · Casual · 2D

Out There Somewhere
Shared: Puzzle · Pixel Graphics · Indie

Moonleap
Shared: Puzzle · Puzzle Platformer · Pixel Graphics

Zup! 5
Shared: Puzzle · Casual · 2D