Games like Space intruders alliance
Games like Space intruders alliance include STAR WARS™ Battlefront™ II, Titanfall® 2, Call of Duty®: Infinite Warfare, The Callisto Protocol™, and Dead Space (2008). We matched them by the tags players give Space intruders alliance on Steam (Space, Boomer Shooter, Shooter, Futuristic, and 3D): closest matches first, and among equally close ones the better-known games.

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

Titanfall® 2
Shared: Shooter · Singleplayer · Futuristic

Call of Duty®: Infinite Warfare
Shared: Space · Action · Futuristic

The Callisto Protocol™
Shared: Space · Shooter · Sci-fi

Dead Space (2008)
Shared: Space · Action · Singleplayer

Crysis Remastered
Shared: Shooter · Action · Singleplayer

STAR WARS™ Battlefront II (Classic, 2005)
Shared: Shooter · Space · Action

Battlefield™ 2042
Shared: Shooter · Singleplayer · Action

Halo: Spartan Assault
Shared: Shooter · Action · Singleplayer

Halo Infinite
Shared: Shooter · Singleplayer · Action

Dead Space
Shared: Space · Shooter · Singleplayer

Trepang2
Shared: Shooter · Singleplayer · Action

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

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

Half-Life 2
Shared: Shooter · Action · Singleplayer

Ready or Not
Shared: Shooter · Singleplayer · Realistic

MindsEye
Shared: Futuristic · Action · Singleplayer

Half-Life
Shared: Shooter · Singleplayer · Action

Quake II
Shared: Boomer Shooter · Shooter · Action

BioShock Infinite
Shared: Shooter · Action · Singleplayer

HELLDIVERS™ 2
Shared: Shooter · Space · Action

Battlefield™ 6
Shared: Shooter · Singleplayer · Action

Halo: Campaign Evolved
Shared: Shooter · Singleplayer · Action

Vanquish
Shared: Shooter · Action · Singleplayer