A sandbox battle simulator game where you can build your own shape-shifting warbots, program their AI, and watch them smash each other up on the battlefield! Join the battles yourself by taking control of the warbots! Use Steam Workshop to check out warbots created by players from around the world!
83%83% positive of 167 reviews7Playing now: 7$9.99
Rebuild civilization from a single planet in Nexus Legacy, a persistent sci-fi 4X MMO. Colonize worlds, manage resources, research technologies, command fleets, forge alliances, and fight for control of a living galaxy.
65%65% positive of 382 reviews97Playing now: 97Free
Lead separate armies on one battlefield in two-player online co-op, counter shifting mech builds across nine planets, and take each fight at your own pace.
83%83% positive of 18,325 reviews2KPlaying now: 1,986$0
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!
80%80% positive of 29,766 reviews323Playing now: 323$29.99
Fly near-future aircraft with immersive physics across dynamic battlefields, facing land, air, and sea threats. Wage war against AI or rival pilots using an array of advanced weaponry, including tactical and strategic nuclear weapons capable of annihilating anything in your path.
94%94% positive of 10,797 reviews484Playing now: 484$19.99
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.
72%72% positive of 3,033 reviews129Playing now: 129Free
The unstoppable fluid enemy has returned and destroyed every world in its path! Defend against Creeper as it floods across the 3D terrain in this real time strategy game where the enemy is a fluid.
94%94% positive of 4,572 reviews198Playing now: 198$24.99
Join an online or LAN team match in Original War, where named specialists, base building, and map-specific rules turn a retro RTS into a hands-on group effort.
94%94% positive of 1,820 reviews44Playing now: 44$9.99
[Servers Temporarily Shut Down!] Build. Gather. Breach. The Wall is a never-before seen mix of genres, where dynamic maps, slick combat, base building, and economy management all come together.
Defend America from an alternate-universe America using state-of-the-art 1980s military hardware in this intricate and tactical turn-based strategy game.
73%73% positive of 329 reviews0Playing now: 0$19.99
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%80% positive of 320 reviews0Playing now: 0$19.99
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%68% positive of 260 reviews0Playing now: 0$14.99
Play out a Kaiju movie as the (hopelessly) outclassed military in this stylish 2D turn-based strategy game. Construct buildings and defend your city with cannon-fodder tanks, jets and more as the devastating kaiju grow in power with every attack.
76%76% positive of 231 reviews0Playing now: 0$19.99
The official adaptation of the legendary wargame from Steve Jackson Games. Engage in futuristic warfare with armored hovercraft, superheavy tanks, infantry, and giant cybernetic war machines called "Ogres".
65%65% positive of 223 reviews0Playing now: 0$24.99
Enter the war-torn world of Veá, where sci-fi and fantasy collide in Liquidation, an immersive RTS. Lead your armies and harness powerful abilities in a high-stakes battle for Quenrium, the mysterious substance that holds Veá’s fate.
89%89% positive of 167 reviews0Playing now: 0$21.99
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%88% positive of 137 reviews0Playing now: 0$14.99