Top similar games like Planetary Siege:

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.

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!

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 grounded sci-fi station builder where you hold failing systems together while pursued by a relentless, energy-hungry swarm. As a fleet on the run, drop into hostile systems, gather what you can, and jump away before you are overwhelmed. Try to survive long enough to secure a future for humanity.

Mine, defend, and profit across planets. Expand your operation, survive enemy waves, and discover dangerous hidden worlds in this minimalist sci-fi strategy shooter.

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.

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.

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.

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.

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.

A strategic tower defense where you command a flock of chickens to gather resources, fortify defenses, and survive relentless predator attacks. Balance growth and survival as you protect the next generation through treacherous nights against tactical predators.

As CEO, build your corporate empire! Design space-efficient factories in a grid-based puzzle system. Fund cutting-edge research to optimize production, master complex supply chains, and dominate a living interstellar economy.

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.

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.

Control a swarm of mindless robots to build and automate a factory. Turn these workers into buildings, use them to carry resources, manufacture products and research new technologies. Manage your systems so your machines don't start to think on their own and escape your factory.

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.

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.

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 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. In Gargantua, 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 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.

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!

Debatto is up to 8 players multiplayer resource management game. Manage vehicles and show Your multitasking skills. Be the fastest builder and compete on worldwide leaderboards.

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.

A strategy game with a new kind of enemy, Calyx puts you in charge of a space mining outpost, locked in battle against powerful plant-aliens. Build your base, gather resources, assemble your forces, and take on the Calyx. With only an out-of-date AI for company, can you survive?

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.

In Space Drilling Station, manage a drilling station on a distant planet. Build a multi-level vertical structure to produce and manage your resources and staff, in order to dominate the competition!

Astra Sentinel is a wave-based survival RTS where endless alien hordes relentlessly assault your planets. Build defenses, colonize planets and manage resources under constant pressure. Will you be able to recover the control of the galaxy?

An RTS base builder with huge battles, constant production, and autonomous ships. The Spance approaches, a vast and mysterious storm at the edge of humanity. Who shall claim its riches? Brave the perils of the depths in a story-rich singleplayer campaign with numerous distinct factions and bosses.

Deep Space Delivery is a fantasy space ship builder. You are the captain of a small vessel, eager of growing your ship while you are traversing the deep, unknown edges of space.