Top similar games like Planetary Siege:

Hexfall is a planet-scale tower defense game where over 100,000 enemies attack at once. Mine the crust, wire the power and arm a hex world against an armada that fills the sky long before it comes down.

Do you like Tower Defense games with Strategy elements? Well, look no further! We've got exactly what you're looking for! Get ready to defend your settlement from enemies using a huge arsenal of towers!

Eversiege is a roguelike, tower defense in which you'll defend a castle in procedurally generated terrain. Establish a production, build defending buildings and survive waves of enemies coming from everywhere! After defeat, buy new buildings, unlock new leaders and prepare to fight again.

A sci-fi low-poly tower defense game. Design your defense against waves of aliens using a wide arsenal of different towers.

Build and lead a colony on the surface of an endless Wall. Manage resources and your people, develop new technologies, defend against relentless zyrex attacks, and send robo-spiders on risky expeditions. Keep the colony from collapsing – in Wall World, it's easy to fall.

Classic Tower Defense meets space exploration. Build turrets on mining platforms, harvest enemies to build more defenses, and mine Dark Energy to travel the stars. As a sentient AI, you must upgrade your tech, scan planets, and find a new home for humanity before Earth fades away.

Assume control of an evil intergalactic megacorporation in this sci-fi tower defense. Build a mining infrastructure on alien moons and exoplanets, exploit their precious resources, and defend your operation against defiant natives.

A sci-fi tower defense where you design enemy routes and build defenses on alien planets. Combine 16 weapons, hold off counterattacks, and advance through a four-planet campaign. Research new gear, face wall-breakers and bosses, or try Endless Mode, seeded expeditions and the map editor.

You are on the run. Build stations in hostile systems, gather what resources you can, and jump away before you are overwhelmed. Your ships are slowly failing, but the Swarm is relentless, hungry, and on your heels. Can you survive long enough to secure a future for humanity?

Command massive space battles where thousands of ships clash in real time. Build your fleet, choose a doctrine, reinforce the battlefront, unleash commander abilities, and adapt as unexpected events turn the tide of war in this mashup of strategy and auto-battler.

Fight a relentless fluid enemy in this mix of tower defense and real-time strategy. Build your base, grow your forces, and unleash massive firepower to reclaim vast flooded worlds. Face Creeper types with different physics, deploy experimental technology, and create your own maps and units.

This is a sci-fi strategy game featuring a Defense Mode focused on tower defense and an Attack Mode focused on combat. The game includes over 30 different buildings and units, all of which can be upgraded through entry editing to enhance their performance and firepower.

A planetary tower defense where enemies attack across land, air, and space. Build layered defenses, manage resources, and survive an escalating alien invasion.

Command carrier fleets across a pausable real-time galaxy. Build planetary industry, confront strange anomalies, bargain or betray rivals—or become the galaxy’s Pirate Syndicate, turning piracy and Plunder into ever-stronger raids.

It's pirates against British sailors (or each other) in this real-time strategy city-building game. Gather resources, build cities, drink rum, fight enemies, explore the sea, and discover new islands.

Create a thriving space station in a lost sector. Face thrilling challenges head-on, from pirate raids to asteroid impacts, as you lead your company to new heights.

Rise Under the Warstorm is a strategy game focused on automation, production, and base defense. Gather resources, build automated production lines, optimize your economy, train armies, and protect your settlement against enemy waves.

Build. Defend. Survive. Expand. A sci-fi base-building game on a hostile alien world. Gather resources, build a sprawling high-tech colony, and defend against relentless alien threats—then unlock new planets, new challenges, and the secrets of humanity’s last frontier.

On a forgotten world, confront a malevolent machine intelligence. Extract minerals, build factories, power up the railguns, and arm the missile batteries. Defend the Fortress Omega against the alloyed nightmare.

Build by day. Defend by night. Command a flock of chickens in a tactical tower-defense survival game where every bird has a job. Gather resources, hatch and recruit stronger chickens, customize weapons and targeting, and outsmart predators with tricks of their own.

Flow Factory is a physics-based factory automation game. Tinker with complex production lines, make them faster and more efficient. Deal with freely floating pieces and defy gravity. Build, research, optimize. Relax and enjoy everything running smoothly.

Comrade, thousands of bio-experiments are escaping. Line escape routes with guns, blast holes through the horde, and unlock absurd Soviet weapons in this incremental tower defence. Excessive force is authorized.

Grid Miner is a real-time strategy puzzle game where you mine asteroids to gather resources and expand your space station. Unlock new tools and utilities as you progress through levels. Maintain your quotas and learn more about your employer and coworkers at Hypergo Industries.

A factory-building game. Survive a harsh climate, strip mine an infinite world, and build a sprawling factory, then trade or go to war with Colonists, Governments, Pirates, Rebels, and more!

As CEO, build a ruthless corporate empire! Solve spatial factory puzzles, master complex supply chains, and manipulate dynamic markets to maximise profit. Mobilise local workforces, fund high-tech R&D, and construct colossal megaprojects to satisfy your demanding Parent Company.

The Final Bastion is a Multiplayer PvP & PvE Tower-defense with a classic Medieval-Fantasy theme. Compete against players in head to head online in a PvP, sending waves against the enemy and growing your economy. Play side by side with your friends in PvE and see who survives the longest.

A defense RTS where you can move turrets at will. Extract resources, upgrade technology, and defend against enemy swarms in a gripping space campaign. Hold the line, set up your turrets, and brace for screen-filling hordes!

Build layered defenses, command futuristic weapons, and trigger devastating chain reactions against waves of Soviet super soldiers. Red Conflict 2044 is a single-player survival RTS with vertical construction, escalating battles, and dark satire about an empire that calls invasion liberation.

A Roguelike Tower Defense in space with missions to conquer. Can you hold against the spreading alien bosses? Build and upgrade towers against the corruption. Choose your technologies and warpspeed your way to victory.

Build your spaceship, Gargantua. Establish industries, shape the free market, trade between planets, and defend your wealth. A single mistake can collapse supply chains and trigger interstellar economic crises. Remember, war is money.

Little Kingdom RTS is an indie real-time strategy game set in a medieval fantasy world. Gather resources, build settlements, raise walls, and grow your small kingdom. Command an army of knights, archers, and mages to fight off rival kingdoms, orcs, and undead.

A real-time war of air defence and industry. Build the economy, bury it, and layer SAMs over what you cannot hide. Read a fading intel picture of the enemy base and aim every missile yourself. Break their will to fight before they break yours.

VALTERION: THE LOST EARTH is a sci-fi colony-building strategy game. Lead 50 survivors on Elyra, build a thriving colony, develop its economy and research, return to the stars, and search for the lost path back to Earth.

Build & defend a small remote mining base on Taichin XI from the alien hordes. Deploy defenses, upgrade your turrets and get ready for the nightfall. The Unearthened is a classic Idle Tower Defense game where you build towers and prepare for the invasion.

Outpost Surge is a society survival game on Mars, where players balance resource management, city growth, and settler health to turn a barren landscape into a thriving, vibrant city.

Defend your base by placing towers strategically, forming interconnected systems that depend on one another. Adapt your strategy to different environments and enemy waves, exploiting their weaknesses. In System Status: SuperCritical, resources are scarce and critical failure is always an option.