Games like RPM - Road Punk Mayhem
Games like RPM - Road Punk Mayhem include BALL x PIT, Sky Force Reloaded, Nova Drift, Bit Blaster XL, and Planes, Bullets and Vodka. We matched them by the tags players give RPM - Road Punk Mayhem on Steam (Bullet Hell, Shoot 'Em Up, Action, Top-Down Shooter, and Shooter): closest matches first, and among equally close ones the better-known games.

BALL x PIT
Shared: Action · Bullet Hell · Shoot 'Em Up

Sky Force Reloaded
Shared: Shoot 'Em Up · Bullet Hell · Top-Down Shooter

Nova Drift
Shared: Bullet Hell · Shoot 'Em Up · Arcade

Bit Blaster XL
Shared: Bullet Hell · Shoot 'Em Up · Shooter

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

Revolution Ace
Shared: Shoot 'Em Up · Action · Bullet Hell

Ikaruga
Shared: Bullet Hell · Shoot 'Em Up · Action

DoDonPachi Resurrection
Shared: Shoot 'Em Up · Bullet Hell · Top-Down Shooter

LUFTRAUSERS
Shared: Bullet Hell · Action · Shoot 'Em Up

ZeroRanger
Shared: Shoot 'Em Up · Bullet Hell · Action

Crimzon Clover World EXplosion
Shared: Shoot 'Em Up · Bullet Hell · Action

Star Saviors
Shared: Bullet Hell · Shoot 'Em Up · Action

Halo: Spartan Assault
Shared: Action · Top-Down Shooter · Sci-fi

DRAINUS
Shared: Shoot 'Em Up · Action · Shooter

Chippy
Shared: Bullet Hell · Shoot 'Em Up · Top-Down Shooter

ESCHATOS
Shared: Bullet Hell · Shoot 'Em Up · Top-Down Shooter

Vampire Survivors
Shared: Bullet Hell · 2D · Action

Waves
Shared: Bullet Hell · Shoot 'Em Up · Shooter

Nex Machina
Shared: Bullet Hell · Action · Shoot 'Em Up

Cyberhunt
Shared: Action · Shoot 'Em Up · Indie

BLUE REVOLVER
Shared: Bullet Hell · Shoot 'Em Up · Action

Touhou Kinjoukyou ~ Fossilized Wonders.
Shared: Bullet Hell · Shoot 'Em Up · Action

Bot Vice
Shared: Bullet Hell · Shoot 'Em Up · Top-Down Shooter

Commando Collection
Shared: Action · Bullet Hell · Shooter