Games like Navyblue and the Spectrum Killers
Games like Navyblue and the Spectrum Killers include Katana ZERO, Pizza Tower, Super Meat Boy, SANABI, and Spelunky 2. We matched them by the tags players give Navyblue and the Spectrum Killers on Steam (Action, Indie, Platformer, and 2D Platformer): closest matches first, and among equally close ones the better-known games.

Katana ZERO
Shared: Action · Platformer · Indie

Pizza Tower
Shared: Indie · 2D Platformer · Platformer

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

SANABI
Shared: Action · 2D Platformer · Indie

Spelunky 2
Shared: Platformer · 2D Platformer · Indie

Gravity Circuit
Shared: Action · Indie · Platformer

Skul: The Hero Slayer
Shared: Action · Indie · Platformer

Celeste
Shared: Indie · Platformer · 2D Platformer

20XX
Shared: Action · Platformer · 2D Platformer

Planet of Lana
Shared: Action · 2D Platformer · Platformer

Dust: An Elysian Tail
Shared: Action · Platformer · Indie

Rogue Legacy 2
Shared: Action · Platformer · Indie

Broforce
Shared: Action · Platformer · Indie

Rogue Legacy
Shared: Platformer · Indie · Action

F.I.S.T.: Forged In Shadow Torch
Shared: Action · Platformer · 2D Platformer

NINJA GAIDEN: Ragebound
Shared: Action · Platformer · 2D Platformer

VVVVVV
Shared: Platformer · Indie · 2D Platformer

Risk of Rain (2013)
Shared: Indie · Action · Platformer

Hollow Knight
Shared: Platformer · Indie · Action

My Friend Pedro
Shared: Action · Indie · Platformer

Tribal Hunter
Shared: Action · 2D Platformer · Platformer

Downwell
Shared: Indie · Platformer · Action

The Messenger
Shared: Platformer · Indie · Action

Brawlhalla
Shared: 2D Platformer · Platformer · Action