Games like Master Spy
Games like Master Spy include Celeste, Katana ZERO, Shovel Knight: Treasure Trove, Super Meat Boy, and Hollow Knight. We matched them by the tags players give Master Spy on Steam (Platformer, Indie, Action, Stealth, and Pixel Graphics): closest matches first, and among equally close ones the better-known games.

Celeste
Shared: Indie · Platformer · Pixel Graphics

Katana ZERO
Shared: Action · Platformer · Pixel Graphics

Shovel Knight: Treasure Trove
Shared: Platformer · Indie · Pixel Graphics

Super Meat Boy
Shared: Platformer · Indie · Difficult

Hollow Knight
Shared: Platformer · Indie · Difficult

SANABI
Shared: Action · Pixel Graphics · Indie

Hollow Knight: Silksong
Shared: Indie · Difficult · Platformer

The Messenger
Shared: Platformer · Retro · Pixel Graphics

Geometry Dash
Shared: Difficult · Platformer · Great Soundtrack

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

Cuphead
Shared: Platformer · Difficult · Indie

VVVVVV
Shared: Platformer · Indie · Pixel Graphics

Gunpoint
Shared: Indie · Stealth · Pixel Graphics

Hotline Miami
Shared: Action · Indie · Great Soundtrack

Pizza Tower
Shared: Indie · Platformer · Great Soundtrack

DEADBOLT
Shared: Stealth · Indie · Pixel Graphics

Mark of the Ninja
Shared: Platformer · Stealth · Indie

Hotline Miami 2: Wrong Number
Shared: Action · Pixel Graphics · Great Soundtrack

Jump King
Shared: Indie · Difficult · Platformer

Out There Somewhere
Shared: Platformer · Indie · Pixel Graphics

Freedom Planet
Shared: Platformer · Action · Indie

Axiom Verge
Shared: Indie · Platformer · Pixel Graphics

Electronic Super Joy
Shared: Platformer · Indie · Difficult

Angry Video Game Nerd Adventures
Shared: Platformer · Indie · Action