Games like Rescue Girl Operation: Code X
Games like Rescue Girl Operation: Code X include PUBG: BATTLEGROUNDS, Apex Legends™, Portal 2, Half-Life 2, and BioShock Infinite. We matched them by the tags players give Rescue Girl Operation: Code X on Steam (Boomer Shooter, 3D Platformer, FPS, Creature Collector, and Puzzle): closest matches first, and among equally close ones the better-known games.

PUBG: BATTLEGROUNDS
Shared: FPS · Shooter · Battle Royale

Apex Legends™
Shared: FPS · Battle Royale · Shooter

Portal 2
Shared: Puzzle · 3D Platformer · First-Person

Half-Life 2
Shared: FPS · Shooter · First-Person

BioShock Infinite
Shared: FPS · Shooter · First-Person

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 · FPS · Shooter

Call of Duty®: Black Ops III
Shared: FPS · Shooter · First-Person

Half-Life: Alyx
Shared: FPS · Shooter · Story Rich

Left 4 Dead 2
Shared: FPS · Shooter · Zombies

Portal
Shared: 3D Platformer · Puzzle · First-Person

Black Mesa
Shared: FPS · Shooter · First-Person

Call of Duty®
Shared: FPS · Shooter · First-Person

DUSK
Shared: Boomer Shooter · FPS · Shooter

CULTIC
Shared: Boomer Shooter · FPS · Shooter

Ready or Not
Shared: FPS · Shooter · First-Person

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

Neon White
Shared: 3D Platformer · FPS · Shooter

SharpShooter3D
Shared: Boomer Shooter · FPS · Shooter

Hello Neighbor
Shared: 3D Platformer · First-Person · Story Rich

Half-Life: Blue Shift
Shared: FPS · Shooter · First-Person

Serious Sam: Siberian Mayhem
Shared: Boomer Shooter · Shooter · First-Person

VLADiK BRUTAL
Shared: FPS · Shooter · First-Person

METRO 2033 Redux
Shared: FPS · Shooter · Story Rich

Inside the Backrooms
Shared: Puzzle · Psychological Horror · FPS