Games like Nitrojet
Games like Nitrojet include Hollow Knight, Hollow Knight: Silksong, Rain World, Touhou Luna Nights, and Ori and the Will of the Wisps. We matched them by the tags players give Nitrojet on Steam (Metroidvania, Destruction, Difficult, 2D, and Exploration): closest matches first, and among equally close ones the better-known games.

Hollow Knight
Shared: Metroidvania · Difficult · Platformer

Hollow Knight: Silksong
Shared: Metroidvania · Difficult · 2D

Rain World
Shared: Difficult · Exploration · 2D

Touhou Luna Nights
Shared: Metroidvania · Difficult · Exploration

Ori and the Will of the Wisps
Shared: Metroidvania · Platformer · Exploration

Nine Sols
Shared: Metroidvania · Difficult · 2D

MIO: Memories in Orbit
Shared: Metroidvania · Exploration · Platformer

Momodora: Reverie Under The Moonlight
Shared: Metroidvania · Exploration · 2D Platformer

Cave Story+
Shared: Metroidvania · Difficult · Exploration

Celeste
Shared: Difficult · Platformer · 2D

Rabi-Ribi
Shared: Metroidvania · Bullet Hell · Exploration

Blasphemous
Shared: Metroidvania · 2D · Difficult

Blasphemous 2
Shared: Difficult · Metroidvania · 2D

Skul: The Hero Slayer
Shared: 2D · Metroidvania · Difficult

The Messenger
Shared: Metroidvania · Platformer · 2D

Rogue Legacy 2
Shared: Metroidvania · Platformer · Difficult

La-Mulana
Shared: Metroidvania · Difficult · Platformer

Afterimage
Shared: Metroidvania · Exploration · 2D Platformer

ANIMAL WELL
Shared: Metroidvania · Exploration · Platformer

Dust: An Elysian Tail
Shared: Metroidvania · Platformer · 2D

Cuphead
Shared: Difficult · Platformer · 2D

SANABI
Shared: 2D · 2D Platformer · Difficult

Axiom Verge
Shared: Metroidvania · Platformer · 2D

Super Meat Boy
Shared: Difficult · Platformer · 2D

