Aliens · Base Building games to play together

13 Aliens · Base Building games your group can play together online, including Abiotic Factor, Buggos 2, and The Planet Crafter.

All games: 13

Abiotic Factor

Abiotic Factor is a survival crafting experience for 1-6 players set in the depths of an underground research facility. Caught between paranormal containment failure, a military crusade, and chaos from a dozen realms, the world’s greatest minds must survive against the universe’s biggest threats.

94% positive of 42,834 reviewsPlaying now: 2,527$34.99

Buggos 2

You are the Buggo Hivemind. In this low-micro swarm RTS you place spawners, set attack pins and send up to 5,000 bugs into the dirty Humans' walls and turrets. Evolve your swarm across a 45-mission campaign, then take it into Survival, Workshop maps or 4-player online battles.

83% positive of 712 reviewsPlaying now: 57$19.99

The Planet Crafter

A space survival open world terraforming crafting game, designed for 1 to 10 players. Alter the ecosystem of an inhospitable planet to render it habitable for humanity. Survive, gather resources, and build your base. Then, generate oxygen, warmth, and pressure to create a brand new biosphere.

95% positive of 69,767 reviewsPlaying now: 5,172$23.99

Starship Troopers: Extermination

Starship Troopers: Extermination is an up to 16-player co-op FPS that puts you on the far-off frontlines of an all-out battle against the Bugs! Squad up, grab your rifle, and do your part as an elite Deep Space Vanguard Trooper to take back planets from the Arachnid threat!

79% positive of 29,763 reviewsPlaying now: 323$29.99

Pixel Starships

Pixel Starships is an FTL-style online sci-fi strategy builder and management game with a competitive PVP tournament. Set in the retro galaxy, your role is to explore space, meet aliens, and develop your ship, crew and AI. The game contains deep strategic and 4x elements. PSS is community-driven.

73% positive of 3,034 reviewsPlaying now: 129Free

Galaxy Life

The universe is full of Starlings, tiny orange aliens that want to take over the galaxy. Create your own space colony, fight epic battles and discover new planets. Train your soldiers, develop your technology and create unimaginable gadgets. Enjoy this huge social game with friends!

91% positive of 8,625 reviewsPlaying now: 255Free

Halo Wars: Definitive Edition

Halo Wars: Definitive Edition is an enhanced version of the real-time strategy classic, Halo Wars, updated to run natively on PC. Halo Wars: Definitive Edition includes improved graphics, new achievements and all of the DLC created for the landmark real-time strategy game.

92% positive of 8,715 reviewsPlaying now: 234$19.99

Operation: New Earth

Operation: New Earth is an intense sci-fi multiplayer strategy game in which you must command an advanced military facility to defend Earth from a hostile alien invasion. Create an alliance, gather resources, and unlock advanced technology to level up your stronghold!

60% positive of 848 reviewsPlaying now: 237Free

DG2: Defense Grid 2 Makes Tower Defense a Shared Puzzle

Team up with one friend to defend power cores in DG2: Defense Grid 2. Choose fully cooperative Doubles or the more competitive Coordinated Defense, online or on one computer.

85% positive of 2,711 reviewsPlaying now: 52$9.99

Road to Eden

Road to Eden is a third-person multiplayer survival coop game, set within the post-apocalyptic ruins of a world destroyed by an alien invasion. You wake up at the side of the road with no memory and must team up with other survivors to make the long and dangerous journey to Eden.

61% positive of 341 reviewsPlaying now: 0$19.99

Stellar Warfare

Space RTS with base building and ship customization. Personal passion project. More than 200 available ships, weapons and modules to design your fleet with. Contains a small campaign, several single and multiplayer game modes and a coop game mode. Also contains Wave defense!

80% positive of 320 reviewsPlaying now: 0$19.99

Codex of Victory

In this sci-fi turn-based strategy with real-time base-building elements, you’ll be defending human territories against the transhuman Augments. Expand your HQ, and manufacture and upgrade an army of advanced drones to wage interplanetary war for Humanity!

68% positive of 260 reviewsPlaying now: 0$14.99

Moduwar

Moduwar is an adaptive organic RTS where you control an alien creature, Modu - and your body is your army. Grow new organs, split, merge and mutate them into unique units that adapt to your needs as you fight against human and alien threats in single and multiplayer modes.

88% positive of 137 reviewsPlaying now: 0$14.99