Games like Pirate Guy
Games like Pirate Guy include A Hat in Time, Celeste, Rogue Legacy 2, Hollow Knight, and Neva. We matched them by the tags players give Pirate Guy on Steam (Adventure, 2D Fighter, Arcade, Walking Simulator, and Platformer): closest matches first, and among equally close ones the better-known games.

A Hat in Time
Shared: Adventure · Collectathon · Cute

Celeste
Shared: Platformer · 2D Platformer · Adventure

Rogue Legacy 2
Shared: Arcade · Platformer · Adventure

Hollow Knight
Shared: Platformer · Adventure · 2D

Neva
Shared: Adventure · Platformer · 2D Platformer

Webbed
Shared: 2D Platformer · Platformer · Cute

SANABI
Shared: Adventure · 2D Platformer · Platformer

The Elephant Collection
Shared: Adventure · Arcade · Platformer

Pizza Tower
Shared: 2D Platformer · Platformer · Indie

Thank Goodness You're Here!
Shared: Adventure · 2D Platformer · Platformer

Anomaly Agent
Shared: 2D Platformer · 2D Fighter · Platformer

Downwell
Shared: Arcade · Platformer · 2D Platformer

Exit the Gungeon
Shared: Arcade · Adventure · Indie

Street Fighter™ 6
Shared: 2D Fighter · Arcade · Adventure

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

Sonic Origins
Shared: Adventure · 2D Platformer · Platformer

Antonball Deluxe
Shared: Adventure · Arcade · Platformer

Hollow Knight: Silksong
Shared: Platformer · Adventure · 2D

Pikuniku
Shared: Adventure · Indie · Platformer

Shovel Knight: Treasure Trove
Shared: Platformer · Adventure · 2D

Songs for a Hero - Definitive Edition
Shared: Adventure · 2D Platformer · Platformer

Firewatch
Shared: Adventure · Walking Simulator · Indie

Brawlhalla
Shared: 2D Fighter · 2D Platformer · Platformer

Sonic the Hedgehog 4 Episode 1
Shared: Adventure · Platformer · 2D