Games like SPACE DUDES vs ALIEN DUDES
Games like SPACE DUDES vs ALIEN DUDES include Black Mesa, Call of Duty®, Half-Life 2, BioShock Infinite, and KovaaK's. We matched them by the tags players give SPACE DUDES vs ALIEN DUDES on Steam (Action, Shooter, FPS, First-Person, and Aliens): closest matches first, and among equally close ones the better-known games.

Black Mesa
Shared: Action · FPS · First-Person

Call of Duty®
Shared: FPS · Shooter · Action

Half-Life 2
Shared: Action · FPS · Shooter

BioShock Infinite
Shared: Action · Shooter · FPS

KovaaK's
Shared: Action · Shooter · FPS

Halo Infinite
Shared: FPS · Shooter · Action

Battlefield™ 2042
Shared: FPS · Shooter · Action

Half-Life
Shared: FPS · Shooter · Action

Titanfall® 2
Shared: FPS · Shooter · Action

Halo: Campaign Evolved
Shared: Action · FPS · Shooter

Half-Life: Opposing Force
Shared: Action · FPS · Shooter

DOOM
Shared: Action · FPS · Shooter

Half-Life: Blue Shift
Shared: Action · FPS · Shooter

Ready or Not
Shared: FPS · Shooter · Singleplayer

Call of Duty®: Black Ops III
Shared: FPS · Shooter · Action

Battlefield™ 1
Shared: FPS · Shooter · Action

Ravenfield
Shared: FPS · Shooter · Action

SUPERHOT
Shared: Action · FPS · Shooter

Counter-Strike: Source
Shared: Shooter · Action · FPS

Bright Memory: Infinite
Shared: Action · FPS · Shooter

Aimlabs
Shared: FPS · Shooter · Action

Call of Duty®: Modern Warfare®
Shared: Action · FPS · Shooter

Call of Duty®: Modern Warfare® 2 (2009)
Shared: Action · FPS · Shooter

Battlefield™ 6
Shared: FPS · Shooter · Action