Top similar games like Iron Marines:

Beware Planet Earth! is a beguiling mix of classic tower defense and time management coming to PC via Steam for the first time. Save your cows from the Martian invasion by building an effective defense using towers, traps and objects, and also by firing your Zapper directly at the invading force of little green men!

Zack Y is a 2D Old School Scifi themed platform action game based on the story of the Alien called Zack Y whose mission is to rule over the Earth.

Yupi, the alien, embarks on the mission to save the Earth, helping humans and armed with his power boots, he must overcome the levels avoiding or using enemies to make his way.

Swarm Queen is a quick-to-learn but tactical and challenging tug-of-war strategy game about insectoid aliens trying to murder each other.

Engage in the construction of your station from a variety of different modules. Create your space fleet. Protect your base from enemies...

Prepare to take off, soldier! The galaxy needs your strategy! Prove your RTS expertise, explore an entire galaxy and defend it from a threatening invasion.

Geometry Defense: Infinite is a classic infinite tower defense game where you must build a maze to slow enemies and build towers to destroy them. An action-packed and engaging game requiring focus to take on challenges and test your skill.

Amazing Pea TD is a PC tower defense game. You’ll lead the resistance of plants, which are being captured by aliens from exhausted starving planet. Place towers and build barricades, freeze, teleport and blow them up - but don't let them enslave You!

Entangled is a physics puzzle game revolving around grappling gun mechanics. You are immersed in a colorful environment while being entranced by a relaxing space ambient soundtrack. It is challenging, but extremely rewarding.

An evil chef has cooked a four course meal and gave it life to help him conquer the world. Choose between 4 diverse characters and save the world!!!

To the Stars is a fast-paced, whimsical and tactical planet-hopping game. Choose your own adventure as you conquer the universe - one constellation at a time.

Get ready for an epic journey to defend your kingdom against hordes of orcs, trolls, evil wizards and other nasty fiends using a vast arsenal of towers and spells at your command!Fight on forests, mountains and wastelands, customizing your defensive strategy with different tower upgrades and specializations!

Drone Swarm is a very unique take on tactical games. Control 32,000 drones in quick, fast-paced fights. Combine your swarm abilities and counter constantly evolving attacks of your opponents. Survive varying enemy waves, get upgrades to your swarm, and make it to the next system alive!

MARSS is a reaction-oriented and puzzle laden RTS game. Use the power of numbers, mandatory friendship and space-gulag threats to take back Mars and expand the robocommunist empire!

A relaxing strategy game featuring unconventional gameplay. Your objectives include development, evolution, border expansion and protection of your hive.

Damn aliens! The choice is: the Universe — or nothing!

Match-them-all to progress through strategy and skill challenges! Matchy Star is a casual action puzzle journey in space with dapper ships, perky stars, and a lot of tactical fun. Cruise the Alpha System all the way to Xanadu. Get your Matchy on!

Bacon Tales is a 2D sideview tower defense game inspired by the famous tale “The Three Little Pigs”. Player must defend the Pig’s Village against the wolves. Choose a hero to help you on your journey and fortify the village to get it more resistant and able to gather more resources.

Apeiron is a Tower Defense with an epic and exciting story. Defeat enemies and bosses with your own strategy. Upgrade your abilities and improve towers. Accept the challenge and adventure through many interesting levels and explore the wondrous game world.

Play as a space soldier, abandoned by the command on an alien planet. Find allies, gather resources, train new troops, and escape from Sector Yama. Casual "single-stick shooter" controls, fun tactical combat, rewarding exploration, and rich storytelling.

The ants have lost their queen; help them find a new one! Armed with toys, explosives, and other items, think fast, draw lines to command your ants, and protect your queen from the hordes of enemy insects looking to put an early end to their rule in this funny but brutal escort tower defense game.

Doggone tired of the typical brawler or tower defense that is all bark and no bite? Then join Alpha and T. Juan on a dynamic adventure that has you battling hordes of baddies and bosses on their mission to save all the Doggos!

Arcade Mayhem Juanito is a retro experience about arcade-hopping. Teleport into different video games, play with unique mechanics inspired by well-known arcade games, face stunningly animated bosses and join the fight against the clonocell invasion.

"Tasking" is an idle monster-hunting game. You will start as an archer and recruit your own team members, use gold coins to purchase powerful skills, challenge formidable bosses, and defeat them one by one, gradually conquering each continent.

Star Merc is an open world rpg where player choices heavily affect outcomes and drastically change the storyline. The game is about exploring different planets, learning about the inhabitants and dealing with the different factions that like to think they control the universe.

The Great Menace is an 'The war of the Worlds 1938' fictional aftermath as an 2D RTS game, after the fake radio drama in 1938, an alien force commences an invasion on Earth the following day, the 5 great powers: USA, Britain, Germany, Japan and USSR must endure the invasion force

MatchyGotchy Z is a colorful digital pet game that combines idle clicker elements with a new take on pet-raising simulation: trainable personalities. All the nostalgia of those old virtual pets, fully adapted into a new desktop gaming experience.

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.

Build a fortress! Defend your honey! Be the bee!

Cosmic Kitchen is a 2D cooking game set in space! Your mission: Feed hungry monsters or else they will take over all the galaxies! Think fast and grab food as it flies into orbit. Use planets, asteroids and more to get cooking and save the universe!

SPACECOM – a strategic-to-the-bone, starfleet command game in which deception, smart movement, and choices to battle decide victory or defeat.

A real-time strategy combat game based on the world of the Line Of Defense. Command a team of four Galactic Command marines in highly classified missions in space and on planets.

After the Earth exploded, the fate of the Earth is in your hands. By creatively building your own spaceship, you'll fight your way through space against pirates. On your journey you will meet many different life forms, some with good, others with bad intentions.

BAFTA award winning fleet-based RTS meets rogue-lite. In Distant Star: Revenant Fleet, build your fleet of up to 5 ships from a choice of 8 classes and traverse a randomly generated galaxy to defeat the Erebus Platform. NOW AVAILABLE ON MAC AND LINUX

8-Bit Invaders! is a fast-paced, retro Real-Time Strategy game for the PC. Control the military might of the Galactic Marine Corps or Invade with the devastating power of the Cranioids! Mine, Build, and Fight your way to victory! Conquering the Multiverse was never so easy.