Games like BULLETARIUM
Games like BULLETARIUM include Echo Point Nova, ULTRAKILL, AMID EVIL, MOUSE: P.I. For Hire, and Warhammer 40,000: Boltgun. We matched them by the tags players give BULLETARIUM on Steam (Arena Shooter, Boomer Shooter, Action, Exploration, and FPS): closest matches first, and among equally close ones the better-known games.

Echo Point Nova
Shared: Arena Shooter · FPS · Exploration

ULTRAKILL
Shared: Boomer Shooter · Arena Shooter · FPS

AMID EVIL
Shared: Boomer Shooter · Arena Shooter · FPS

MOUSE: P.I. For Hire
Shared: Action · FPS · Boomer Shooter

Warhammer 40,000: Boltgun
Shared: Boomer Shooter · FPS · Action

BioShock Infinite
Shared: Action · Shooter · FPS

MULLET MADJACK
Shared: Boomer Shooter · FPS · Action

Half-Life 2
Shared: Action · FPS · Shooter

BRAZILIAN DRUG DEALER 3: I OPENED A PORTAL TO HELL IN THE FAVELA TRYING TO REVIVE MIT AIA I NEED TO CLOSE IT
Shared: Boomer Shooter · Arena Shooter · FPS

Fallout 4
Shared: Exploration · Shooter · Adventure

Apex Legends™
Shared: FPS · Shooter · Action

Black Mesa
Shared: Action · FPS · Shooter

Selaco
Shared: FPS · Boomer Shooter · Shooter

PUBG: BATTLEGROUNDS
Shared: Shooter · FPS · Action

Fashion Police Squad
Shared: Boomer Shooter · Arena Shooter · FPS

Anger Foot
Shared: Boomer Shooter · FPS · Action

Aimlabs
Shared: FPS · Action · Shooter

Far Cry 3
Shared: Action · FPS · Shooter

Prodeus
Shared: Boomer Shooter · FPS · Action

Far Cry® 4
Shared: Action · FPS · Shooter

Turbo Overkill
Shared: Boomer Shooter · Action · FPS

Ratz Instagib
Shared: Arena Shooter · Boomer Shooter · FPS

Far Cry® 6
Shared: FPS · Action · Shooter

S.T.A.L.K.E.R.: Shadow of Chornobyl - Enhanced Edition
Shared: Action · Exploration · Adventure