Top similar games like Spacebase Siege:

Command from above. Fight from within. Viridian Corp. is a single-player sci-fi action RTS and third-person shooter. Lead the war, capture mining zones, direct your forces, then Mindwalk into a soldier and enter the battle yourself.

You are the commander on the last line of defense. Hold your base, recruit soldiers, and launch them via cannon to another collapsing front. A cooperative (1-2 players) tactical defense game where your decisions decide the fate of two battles.

Fight across five solar systems in a story-driven mix of tower defense and space combat, where every planet you save brings you closer to the truth and to those you thought were lost.

Command a squad of six specialists in explosive 4v4 multiplayer battles. Make real-time tactical decisions as a commander, or take direct control of any specialist at critical moments.

Fascinating and entertaining space action game.

This game combines two game operations: real-time strategy and shooting. You're both a commander and a soldier. It is totally up to you to win the war by good tactics or superb marksmanship.

Equip your mechs, drop them from orbit and hold the line. NEEDLEFALL is a horde defense RTS for 1–4 players. Build pipes to carry Flux to the Core and your turrets, raise walls, command your mechs against swarms of hundreds of creatures and destroy the twelve hives.

Build your base, command your army, and wage real-time PvP war on a living conquest map. Clear a frontier of monsters and alien UFOs, join a faction, team up with friends, and climb the seasonal ranks. A classic base-building RTS with modern military firepower, ad-free on desktop.

Apocalypseed is a 2D real-time strategy game where you are the invasion. Devour humans to harvest flesh, build and strengthen an army of alien plants, and evolve your creatures into new forms with unique abilities. Crush the human resistance as it deploys increasingly dangerous threats to stop you.

Reapers Inc., is a fast-paced RTS where you lead an elite squad to defend your base against relentless intergalactic threats. Navigate diverse planetary biomes, strategically manage your squad, and use quick decision-making skills to exterminate your foes. Stand your ground, and reap the rewards.

Become the champion of the ultimate galactic show in this intense blend of Tower Defense and tactical assault. Manage resources in real-time, deploy your AI squads, and annihilate your rivals before billions of spectators in Quantum Fight: Aero 2299.

Manny TD is a hybrid tower defense and third-person shooter with random in game elements. Join and get your personal high score!

Fly out solo or with up to 3 friends to scavenge resources, fend off swarming aliens, and race back to defend your dying space station from the waves you dragged home. No winning. Just how long you survive.

Prime Domination is a real-time strategy game where you build your base, manage finance, produce powerful military units, and battle against AI or other players in large-scale multiplayer matches with up to 10 commanders.

Two teams. One giant chessboard. Every kill earns your team a move, then you climb inside a hundred-foot chess piece and drive it across the arena, crushing anyone where it lands. Real-time chess with no turns, no waiting, and a whole lot of gunfire. Take the enemy king to win.

Want a Third-Person, fast-action, 3-way control support shooter? You came to the right place. Good job.

Star Wrath is a multiplayer space extraction-action where you design your own ship and fight other players for resources in intense PvP and PvE battles.

Lead a squadron of pilots in combat, working for a ruthlessly efficient mercenary company. Satisfy management's quotas while fighting against under-supply, an onslaught of monsters, and rival mercenaries; optionally keep your subordinates alive in the process.

Heroes of Might and Magic meets Homeworld. Five Spellriggers, six schools of magic, randomly drawn loot cards and generated battlefields: no two runs alike. Build your fleet, master cosmic-scale spells and conquer the galaxy sector by sector.

Expansion is a sci-fi Action RTS where deck-building strategy meets fast-paced VR duels — battle AI or challenge real players.

Silica blends FPS and RTS in epic, photorealistic battles. Choose to fight on the ground or command from above as humans or aliens. Dive into thrilling multiplayer combat or master strategic command. Are you ready to survive and conquer?

Command your forces from above or take direct control on the ground. Operative Division is an intense RTS-TPS hybrid set in a post-apocalyptic world. Manage finite resources, execute surgical tactical maneuvers, and unleash devastating superweapons in a battle for humanity's future.

Single player tactical action real-time game with active pause to plan orders carefully. Based on real war-time experience of living Russian veterans of war in Ukraine. It's all about modern conflict small infantry groups with some armored vehicle and drone support as well as real events story

Crossfire: Legion is a real time strategy game featuring tactical action in furious battles across a shattered version of the near future. Raise and customize your army to engage in intense online combat and carve your own path as you rise through the ranks. It’s a new generation of warfare.

Experience cinematic space warfare in SALVO, an action packed real-time tactical combat simulator. Command your flagship and engage in intense battles in a war-torn solar system. Play a story-driven campaign, or forge your own destiny across the dangerous frontiers.

Ten fortresses, one river, five against five. Build your base, train an army of up to a hundred units and break the enemy HQs with your team in fast real-time strategy battles. Free to play, with cross-play between PC, iPhone and Android.

You are dealt one of several rival factions. Destroy the enemy before your base falls. Kills move you up the tiers, from your faction's unique unit to drones, vehicles and gunships; losses strengthen your enemy. 8-player RTS: solo or co-op vs bots, ranked and casual online, LAN, mobile cross-play.

Fight hordes of aliens and visit desolate moons in this arcade-inspired third-person shooter.

A classic RTS featuring traditional base-building, resource-driven warfare, PvP, skirmish, and a powerful, easy-to-use Mission Editor. Build your base. Secure the ECO. Conquer the battlefield.

Get ready to protect the entire solar system from an unprecedented threat - the D'Ahari, a race of insect-like aliens. Control an entire fleet of spaceships, trade with other races of an Alliance, and develop your own space station.

Step into the Wild West future of Cowboy 3030, a third-person shooter with 3D bullet hell and roguelike elements. Play solo or team up with friends, as various heroes with unique abilities. Take on notorious alien outlaws, forge unique builds in every run and rise to become top gun of 3030!

Create your own ship designs and command them in tactical, real-time multiplayer battles. Outsmart your opponent through smart positioning, specialized weapons, and ships built around your strategy.

A cooperative action tower defense and third-person shooter where vision is mutually exclusive. Place towers to shine light on the endless horde of bugs, or use augmented vision to fight alongside defenses. Equip powerful modules that unleash your strategy's true potential!