Games like Galatico
Games like Galatico include ULTRAKILL, AMID EVIL, Harbinger, BRAZILIAN DRUG DEALER 3: I OPENED A PORTAL TO HELL IN THE FAVELA TRYING TO REVIVE MIT AIA I NEED TO CLOSE IT, and Half-Life 2. We matched them by the tags players give Galatico on Steam (Boomer Shooter, Arena Shooter, Shoot 'Em Up, FPS, and 3D Platformer): closest matches first, and among equally close ones the better-known games.

ULTRAKILL
Shared: Boomer Shooter · FPS · Arena Shooter

AMID EVIL
Shared: Boomer Shooter · Arena Shooter · FPS

Harbinger
Shared: Arena Shooter · Boomer Shooter · FPS

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

Half-Life 2
Shared: FPS · Sci-fi · First-Person

Starship Troopers: Extermination
Shared: FPS · First-Person · Sci-fi

Deep Rock Galactic
Shared: FPS · PvE · First-Person

ODDCORE
Shared: Arena Shooter · Boomer Shooter · FPS

Bloodshed
Shared: Boomer Shooter · FPS · Arena Shooter

Counter-Strike 2
Shared: FPS · Shooter · First-Person

Warhammer 40,000: Boltgun
Shared: Boomer Shooter · FPS · First-Person

OMFG: One Million Fatal Guns
Shared: Arena Shooter · FPS · Shoot 'Em Up

Black Mesa
Shared: FPS · First-Person · Sci-fi

Jump Space
Shared: FPS · PvE · Sci-fi

BioShock Infinite
Shared: FPS · First-Person · Shooter

SPRAWL
Shared: FPS · Boomer Shooter · Sci-fi

Nova Drift
Shared: Shoot 'Em Up · Arena Shooter · Bullet Hell

Turbo Overkill
Shared: Boomer Shooter · FPS · Shooter

Crysis 2 Remastered
Shared: FPS · First-Person · Shoot 'Em Up

DUSK
Shared: Boomer Shooter · FPS · First-Person

CULTIC
Shared: Boomer Shooter · FPS · First-Person

Crysis 3 Remastered
Shared: FPS · Sci-fi · First-Person

Aimlabs
Shared: FPS · First-Person · Shooter

SharpShooter3D
Shared: Boomer Shooter · FPS · First-Person