Games like Pecker
Games like Pecker include A Hat in Time, Supraland, The Big Catch: Tacklebox, COCOON, and Chained Together. We matched them by the tags players give Pecker on Steam (Puzzle Platformer, Exploration, Adventure, Collectathon, and 3D Platformer): closest matches first, and among equally close ones the better-known games.

A Hat in Time
Shared: Collectathon · 3D Platformer · Adventure

Supraland
Shared: Puzzle Platformer · Exploration · Adventure

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

COCOON
Shared: Adventure · Exploration · Puzzle Platformer

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

Slime Rancher
Shared: Exploration · Adventure · Colorful

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

Yooka-Laylee
Shared: Adventure · Collectathon · 3D Platformer

Human Fall Flat
Shared: Adventure · Puzzle Platformer · Puzzle

Pumpkin Jack
Shared: Adventure · 3D Platformer · Collectathon

Sonic Frontiers
Shared: Adventure · Exploration · 3D Platformer

Webbed
Shared: Puzzle Platformer · Exploration · Cute

Viewfinder
Shared: Puzzle Platformer · Puzzle · Adventure

Trine 3: The Artifacts of Power
Shared: Puzzle Platformer · 3D Platformer · Action-Adventure

Bomb Rush Cyberfunk
Shared: 3D Platformer · Adventure · Colorful

Refunct
Shared: 3D Platformer · Puzzle Platformer · Adventure

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

Mirror's Edge™
Shared: Exploration · 3D Platformer · Action-Adventure

Portal
Shared: Puzzle Platformer · Puzzle · 3D Platformer

Chants of Sennaar
Shared: Adventure · Puzzle · Colorful

Tomb Raider IV-VI Remastered
Shared: Adventure · Exploration · 3D Platformer

TUNIC
Shared: Exploration · Puzzle · Action-Adventure

ANIMAL WELL
Shared: Exploration · Puzzle Platformer · Puzzle

Promenade
Shared: Adventure · Exploration · Collectathon