Games like Rheum
Games like Rheum include Bit Blaster XL, BALL x PIT, LUFTRAUSERS, Planes, Bullets and Vodka, and Vampire Survivors. We matched them by the tags players give Rheum on Steam (Bullet Hell, Shoot 'Em Up, Top-Down Shooter, Difficult, and Shooter): closest matches first, and among equally close ones the better-known games.
Bit Blaster XL
Shared: Bullet Hell · Shoot 'Em Up · Difficult
BALL x PIT
Shared: Bullet Hell · Arcade · Shoot 'Em Up
LUFTRAUSERS
Shared: Bullet Hell · Arcade · Shoot 'Em Up
Planes, Bullets and Vodka
Shared: Shoot 'Em Up · Bullet Hell · Arcade
Vampire Survivors
Shared: Bullet Hell · 2D · Pixel Graphics
Bot Vice
Shared: Bullet Hell · Top-Down Shooter · Shoot 'Em Up
20 Minutes Till Dawn
Shared: Bullet Hell · Shoot 'Em Up · Top-Down Shooter
Exit the Gungeon
Shared: Bullet Hell · Arcade · Difficult
Sky Force Reloaded
Shared: Shoot 'Em Up · Bullet Hell · Top-Down Shooter
ZeroRanger
Shared: Shoot 'Em Up · Bullet Hell · Arcade
Enter the Gungeon
Shared: Bullet Hell · Difficult · Pixel Graphics
Ikaruga
Shared: Bullet Hell · Shoot 'Em Up · Arcade
Chippy
Shared: Bullet Hell · Shoot 'Em Up · Top-Down Shooter
DoDonPachi Resurrection
Shared: Shoot 'Em Up · Bullet Hell · Top-Down Shooter
Nova Drift
Shared: Bullet Hell · Shoot 'Em Up · Arcade
Revolution Ace
Shared: Shoot 'Em Up · Bullet Hell · Shooter
BLUE REVOLVER
Shared: Bullet Hell · Shoot 'Em Up · Arcade
Nuclear Throne
Shared: Bullet Hell · Difficult · Top-Down Shooter
UBERMOSH Vol.5
Shared: Bullet Hell · Arcade · Top-Down Shooter
Hotline Miami 2: Wrong Number
Shared: Difficult · Pixel Graphics · Action
Touhou Koumakyou: New Classic - the Embodiment of Scarlet Devil
Shared: Bullet Hell · Shoot 'Em Up · Difficult
Star Saviors
Shared: Bullet Hell · Shoot 'Em Up · Arcade
Star of Providence
Shared: Bullet Hell · Shoot 'Em Up · Difficult
Cyberhunt
Shared: Shoot 'Em Up · Arcade · Action