Games like Ghost Guy
Games like Ghost Guy include Terraria, Rain World, Hyper Light Drifter, OneShot, and Hollow Knight. We matched them by the tags players give Ghost Guy on Steam (Adventure, 2D Fighter, Arcade, Exploration, and 2D): closest matches first, and among equally close ones the better-known games.

Terraria
Shared: Adventure · 2D · Pixel Graphics

Rain World
Shared: Exploration · Atmospheric · Pixel Graphics

Hyper Light Drifter
Shared: Adventure · Pixel Graphics · Atmospheric

OneShot
Shared: Pixel Graphics · Adventure · Indie

Hollow Knight
Shared: 2D · Exploration · Adventure

Reventure
Shared: Adventure · Pixel Graphics · 2D

Five Nights at Freddy's: Into the Pit
Shared: Adventure · Pixel Graphics · 2D

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

Keep Driving
Shared: Adventure · Pixel Graphics · Atmospheric

Firewatch
Shared: Adventure · Atmospheric · Exploration

Stray
Shared: Adventure · Exploration · Atmospheric

ANIMAL WELL
Shared: Exploration · Pixel Graphics · Adventure

Fallout 4
Shared: Adventure · Exploration · Atmospheric

DAVE THE DIVER
Shared: Adventure · Pixel Graphics · Exploration

Finding Paradise
Shared: Adventure · Pixel Graphics · 2D

Impostor Factory
Shared: Adventure · Pixel Graphics · 2D

Outer Wilds
Shared: Exploration · Adventure · Atmospheric

The Long Dark
Shared: Exploration · Adventure · Atmospheric

A Short Hike
Shared: Adventure · Exploration · Pixel Graphics

Dead Cells
Shared: Adventure · 2D · Pixel Graphics

Exit the Gungeon
Shared: Arcade · Adventure · Pixel Graphics

OMORI
Shared: Pixel Graphics · Indie · 2D

FEZ
Shared: Exploration · Adventure · Pixel Graphics

INMOST
Shared: Adventure · Pixel Graphics · Exploration