Games like Promethium
Games like Promethium include Blazing Chrome, DRAINUS, LUFTRAUSERS, Huntdown, and Ikaruga. We matched them by the tags players give Promethium on Steam (Indie, Action, Shoot 'Em Up, Arcade, and Shooter): closest matches first, and among equally close ones the better-known games.

Blazing Chrome
Shared: Action · Indie · Retro

DRAINUS
Shared: Action · Indie · Shoot 'Em Up

LUFTRAUSERS
Shared: Indie · Action · Arcade

Huntdown
Shared: Action · Shooter · Side Scroller

Ikaruga
Shared: Shoot 'Em Up · Arcade · Action

ZeroRanger
Shared: Indie · Shoot 'Em Up · Action

Revolution Ace
Shared: Action · Indie · Shoot 'Em Up

Intrusion 2
Shared: Indie · Action · Shooter

Planes, Bullets and Vodka
Shared: Action · Shoot 'Em Up · Arcade

Zombotron
Shared: Action · Indie · Shooter

My Friend Pedro
Shared: Indie · Action · Shooter

METAL SLUG 3
Shared: Action · Arcade · Side Scroller

METAL SLUG
Shared: Action · Arcade · Shoot 'Em Up

Bit Blaster XL
Shared: Shoot 'Em Up · Arcade · Shooter

Star Saviors
Shared: Shoot 'Em Up · Action · Indie

METAL SLUG X
Shared: Action · Arcade · Shoot 'Em Up

Bright Memory: Infinite
Shared: Action · Indie · Shooter

UBERMOSH Vol.5
Shared: Indie · Action · Arcade

Rogue Legacy 2
Shared: Arcade · Action · Indie

Devil Daggers
Shared: Indie · Action · Difficult

Cube Destroyer
Shared: Indie · Action · Shoot 'Em Up

Kung Fury: Street Rage - Ultimate Edition
Shared: Indie · Arcade · Action

Exit the Gungeon
Shared: Indie · Action · Arcade

Sine Mora
Shared: Indie · Shoot 'Em Up · Action