Games like Orbit Breaker
Games like Orbit Breaker include Bit Blaster XL, Planes, Bullets and Vodka, BALL x PIT, Deep Rock Galactic: Survivor, and Nova Drift. We matched them by the tags players give Orbit Breaker on Steam (Action, Casual, Shooter, Arcade, and Arena Shooter): closest matches first, and among equally close ones the better-known games.

Bit Blaster XL
Shared: Shooter · Bullet Hell · Arcade

Planes, Bullets and Vodka
Shared: Action · Casual · Arcade

BALL x PIT
Shared: Action · Arcade · Bullet Hell

Deep Rock Galactic: Survivor
Shared: Bullet Hell · Top-Down Shooter · Action

Nova Drift
Shared: Arcade · Bullet Hell · Arena Shooter

Vampire Survivors
Shared: Bullet Hell · Casual · 2D

Chippy
Shared: Bullet Hell · Arena Shooter · Arcade

Gem Defender: Soyjak Survivors
Shared: Action · Shooter · Bullet Hell

SNKRX
Shared: Arena Shooter · Top-Down Shooter · Arcade

Geometry Arena
Shared: Arena Shooter · Arcade · Bullet Hell

Glyphica: Typing Survival
Shared: Action · Arena Shooter · Bullet Hell

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

State of Anarchy: Master of Mayhem
Shared: Action · Top-Down Shooter · Shooter

Deployment
Shared: Shooter · Action · Arena Shooter

DoDonPachi Resurrection
Shared: Shooter · Action · Top-Down Shooter

UpGun
Shared: Casual · Shooter · Arcade

Rocket Rats
Shared: Casual · Bullet Hell · Action

Escape From Duckov
Shared: Action · Shooter · Top-Down Shooter

Commando Collection
Shared: Action · Shooter · Arcade

Ball-it Hell
Shared: Arcade · Bullet Hell · Action

Sky Force Reloaded
Shared: Arcade · Action · Bullet Hell

Orbt XL
Shared: Arcade · Action · Casual

Kill The Crows
Shared: Action · Arcade · Arena Shooter

Utopia Must Fall
Shared: Casual · Arcade · Action