Aliens · Moddable games to play together

7 Aliens · Moddable games your group can play together online, including Star Control®: Origins, Alien Swarm: Reactive Drop, and Galactic Civilizations III.

Star Control®: Origins

Star Control is a space role-playing game in which you command Earth's first interstellar starship on a mission to save the Earth from hostile alien empires.

$19.99

Alien Swarm: Reactive Drop

Co-operative top-down shooter game available for free. An epic bug hunt featuring a unique blend of co-op play and squad-level tactics.

Free

Build a civilization that will stand the test of time in the largest space-based strategy game ever! Choose from dozens of unique races and make a name for yourself across the galaxy through diplomacy, espionage, technological advances, and more.

Natural Selection 2

A fast paced multiplayer shooter that pits aliens against humans in a strategic and action-packed struggle for survival!

$4.99

Half-Life 2

Reawakened from stasis in the occupied metropolis of City 17, Gordon Freeman is joined by Alyx Vance as he leads a desperate human resistance. Experience the landmark first-person shooter packed with immersive world-building, boundary-pushing physics, and exhilarating combat.

$9.99

Half-Life

Named Game of the Year by over 50 publications, Valve's debut title blends action and adventure with award-winning technology to create a frighteningly realistic world where players must think to survive. Also includes an exciting multiplayer mode that allows you to play against friends and enemies around the world.

$9.99

KallaX

Kallax is a chaotic furniture-building 2 to 6 players co-op game in which only one player can read the instruction manual at a time. Experience what should have been a one person's job and lose friendships forever.

$9.99