Games like Bezier
Games like Bezier include Beat Hazard, LUFTRAUSERS, Star Saviors, Nova Drift, and ZeroRanger. We matched them by the tags players give Bezier on Steam (Action, Indie, Twin Stick Shooter, Shoot 'Em Up, and Bullet Hell): closest matches first, and among equally close ones the better-known games.

Beat Hazard
Shared: Twin Stick Shooter · Shoot 'Em Up · Bullet Hell

LUFTRAUSERS
Shared: Indie · Action · Bullet Hell

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

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

ZeroRanger
Shared: Indie · Shoot 'Em Up · Action

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

Nex Machina
Shared: Action · Twin Stick Shooter · Bullet Hell

Cyberhunt
Shared: Action · Indie · Shoot 'Em Up

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

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

Vampire Survivors
Shared: Bullet Hell · Indie · Action

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

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

Windowkill
Shared: Action · Indie · Bullet Hell

Geometry Wars: Retro Evolved
Shared: Twin Stick Shooter · Arcade · Bullet Hell

A Dance of Fire and Ice
Shared: Indie · Arcade · Colorful

Exit the Gungeon
Shared: Indie · Action · Arcade

BALL x PIT
Shared: Action · Bullet Hell · Arcade

Touhou Kouryudou ~ Unconnected Marketeers.
Shared: Action · Shoot 'Em Up · Bullet Hell

Touhou Koumakyou: New Classic - the Embodiment of Scarlet Devil
Shared: Shoot 'Em Up · Bullet Hell · Action

Savant - Ascent
Shared: Action · Indie · Shoot 'Em Up

Jets'n'Guns 2
Shared: Action · Indie · Shoot 'Em Up

Jet Lancer
Shared: Action · Indie · Shoot 'Em Up

DRAINUS
Shared: Action · Indie · Shoot 'Em Up