Games like Demeter
Games like Demeter include Waves, BALL x PIT, Chippy, Bit Blaster XL, and Sky Force Reloaded. We matched them by the tags players give Demeter on Steam (Bullet Hell, Shoot 'Em Up, Twin Stick Shooter, Top-Down Shooter, and Arcade): closest matches first, and among equally close ones the better-known games.
Waves
Shared: Bullet Hell · Shoot 'Em Up · Twin Stick Shooter
BALL x PIT
Shared: Bullet Hell · Arcade · Shoot 'Em Up
Chippy
Shared: Bullet Hell · Twin Stick Shooter · Shoot 'Em Up
Bit Blaster XL
Shared: Bullet Hell · Shoot 'Em Up · Arcade
Sky Force Reloaded
Shared: Shoot 'Em Up · Bullet Hell · Arcade
Nex Machina
Shared: Bullet Hell · Twin Stick Shooter · Arcade
Nova Drift
Shared: Bullet Hell · Shoot 'Em Up · Arcade
Beat Hazard
Shared: Bullet Hell · Twin Stick Shooter · Shoot 'Em Up
Sektori
Shared: Shoot 'Em Up · Twin Stick Shooter · Bullet Hell
Assault Android Cactus+
Shared: Bullet Hell · Shoot 'Em Up · Twin Stick Shooter
Planes, Bullets and Vodka
Shared: Shoot 'Em Up · Bullet Hell · Arcade
Minishoot' Adventures
Shared: Bullet Hell · Twin Stick Shooter · Top-Down
DoDonPachi Resurrection
Shared: Shoot 'Em Up · Bullet Hell · Top-Down Shooter
Bot Vice
Shared: Bullet Hell · Shoot 'Em Up · Top-Down Shooter
Cyberhunt
Shared: Shoot 'Em Up · Twin Stick Shooter · Arcade
Revolution Ace
Shared: Shoot 'Em Up · Bullet Hell · Shooter
LUFTRAUSERS
Shared: Bullet Hell · Arcade · Shoot 'Em Up
State of Anarchy: Master of Mayhem
Shared: Bullet Hell · Top-Down Shooter · Twin Stick Shooter
Ikaruga
Shared: Bullet Hell · Shoot 'Em Up · Arcade
Time Wasters
Shared: Bullet Hell · Twin Stick Shooter · Shoot 'Em Up
Insect Swarm
Shared: Shoot 'Em Up · Shooter · Top-Down Shooter
Windowkill
Shared: Bullet Hell · Arcade · Twin Stick Shooter
ZeroRanger
Shared: Shoot 'Em Up · Bullet Hell · Arcade
Geometry Wars: Retro Evolved
Shared: Twin Stick Shooter · Bullet Hell · Arcade