Games like Alien Gladiator
Games like Alien Gladiator include Battlefield™ 6, Battlefield™ 2042, Just Cause™ 3, MOUSE: P.I. For Hire, and KovaaK's. We matched them by the tags players give Alien Gladiator on Steam (Action, Shooter, Shoot 'Em Up, Cartoony, and Destruction): closest matches first, and among equally close ones the better-known games.

Battlefield™ 6
Shared: Shooter · Action · Singleplayer

Battlefield™ 2042
Shared: Shooter · Action · Singleplayer

Just Cause™ 3
Shared: Action · Destruction · Shooter

MOUSE: P.I. For Hire
Shared: Action · Cartoony · Shooter

KovaaK's
Shared: Action · Shooter · Indie

STAR WARS™ Battlefront™ II
Shared: Shooter · Action · Singleplayer

THE FINALS
Shared: Destruction · Shooter · Action

Titanfall® 2
Shared: Shooter · Action · Singleplayer

BioShock Infinite
Shared: Action · Shooter · Singleplayer

Ready or Not
Shared: Shooter · Singleplayer · Action

My Friend Pedro
Shared: Action · Shooter · Indie

Call of Duty®
Shared: Shooter · Action · Singleplayer

Battlefield™ V
Shared: Shooter · Singleplayer · Combat

Just Cause 4 Reloaded
Shared: Action · Destruction · Shooter

BattleBit Remastered
Shared: Shooter · Destruction · Action

Cube Destroyer
Shared: Action · Shoot 'Em Up · Shooter

Battlefield 3™
Shared: Action · Shooter · Singleplayer

Trepang2
Shared: Shooter · Action · Singleplayer

Bright Memory: Infinite
Shared: Action · Shooter · Singleplayer

Battlefield™ 1
Shared: Shooter · Action · Singleplayer

WARDOGS
Shared: Action · Shooter · Combat

Battlefield 4™
Shared: Shooter · Action · Singleplayer

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

Call of Duty®: Modern Warfare® III
Shared: Action · Shooter · Singleplayer