Games like Cell Sword
Games like Cell Sword include Half-Life 2, Serious Sam: Siberian Mayhem, Marvel's Guardians of the Galaxy, High On Life, and STAR WARS Jedi: Survivor™. We matched them by the tags players give Cell Sword on Steam (6DOF, Boomer Shooter, 3D, Sci-fi, and Dark Comedy): closest matches first, and among equally close ones the better-known games.

Half-Life 2
Shared: Sci-fi · Action · Shooter

Serious Sam: Siberian Mayhem
Shared: Boomer Shooter · Action · 3D

Marvel's Guardians of the Galaxy
Shared: Action · Sci-fi · Action-Adventure

High On Life
Shared: Comedy · Sci-fi · Shooter

STAR WARS Jedi: Survivor™
Shared: Action · Sci-fi · Action-Adventure

Grandpa High on Retro
Shared: Action · 3D · Shooter

BioShock Infinite
Shared: Action · Shooter · Sci-fi

High On Life 2
Shared: 3D · Comedy · Action-Adventure

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 · 3D · Shooter

Crimson Desert Enhanced
Shared: Action · Exploration · Adventure

Warhammer 40,000: Space Marine 2
Shared: Action · Sci-fi · Action-Adventure

STAR WARS™ Battlefront™ II
Shared: Sci-fi · Shooter · Action

Black Myth: Wukong
Shared: Action · 3D · Action-Adventure

SPRAWL
Shared: Sci-fi · Boomer Shooter · Shooter

POSTAL: Brain Damaged
Shared: Boomer Shooter · Action · Shooter

SharpShooter3D
Shared: Boomer Shooter · Action · 3D

Sonic Frontiers
Shared: Action · 3D · Exploration

METAL EDEN
Shared: Action · 3D · Boomer Shooter

Far Cry® 6
Shared: Action · Shooter · Action-Adventure

Black Mesa
Shared: Sci-fi · Action · Shooter

Zortch
Shared: Boomer Shooter · Action · Shooter

Star Wars Outlaws
Shared: Action · Sci-fi · Action-Adventure

CULTIC
Shared: Boomer Shooter · Action · Shooter

The Callisto Protocol™
Shared: Sci-fi · Shooter · 3D