Games like ORION SHOOTER - オリオンシューター
Games like ORION SHOOTER - オリオンシューター include Vampire Survivors, KovaaK's, My Friend Pedro, 永远消失的幻想乡 ~ The Disappearing of Gensokyo, and Bright Memory: Infinite. We matched them by the tags players give ORION SHOOTER - オリオンシューター on Steam (Action, Bullet Hell, Indie, Shooter, and Anime): closest matches first, and among equally close ones the better-known games.

Vampire Survivors
Shared: Bullet Hell · Indie · Singleplayer

KovaaK's
Shared: Action · Shooter · Indie

My Friend Pedro
Shared: Action · Indie · Shooter

永远消失的幻想乡 ~ The Disappearing of Gensokyo
Shared: Bullet Hell · Anime · Action

Bright Memory: Infinite
Shared: Action · Indie · Shooter

Megabonk
Shared: Indie · Bullet Hell · Action

LUFTRAUSERS
Shared: Bullet Hell · Indie · Action

Touhou Kouryudou ~ Unconnected Marketeers.
Shared: Bullet Hell · Action · Shooter

SUPERHOT
Shared: Action · Indie · Shooter

Revolution Ace
Shared: Action · Indie · Bullet Hell

ICEY
Shared: Action · Anime · Indie

DRAINUS
Shared: Action · Indie · Shooter

Rabi-Ribi
Shared: Bullet Hell · Anime · Indie

Touhou Koumakyou: New Classic - the Embodiment of Scarlet Devil
Shared: Bullet Hell · Action · Indie

MULLET MADJACK
Shared: Action · Indie · Anime

Call of Duty®
Shared: Action · Shooter · Singleplayer

Aimlabs
Shared: Action · Shooter · Score Attack

Exit the Gungeon
Shared: Action · Indie · Bullet Hell

BioShock Infinite
Shared: Action · Shooter · Singleplayer

Grand Theft Auto V Legacy
Shared: Action · Shooter · Singleplayer

Neon White
Shared: Action · Shooter · Indie

Swarmlake
Shared: Action · Shooter · Bullet Hell

Enter the Gungeon
Shared: Bullet Hell · Indie · Action

Dungeon Munchies
Shared: Action · Indie · Anime