Top similar games like The Echoes of Mars:
The Echoes of Mars $4.99
The Echoes of Mars is a voxel-style tower defence game. Defend your research base on Mars from ancient creatures by strategically placing towers and using advanced tech.
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MARTIAN CONQUER$2.99
Jump in the cockpit and combate the human fleet.M C is a mix of RTS and classic space shooter game.
Beware Planet Earth$4.99
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!
Escape From The Red Planet$5.99
Escape From The Red Planet simplifies resource management, tower defence, and first-person mechanics into a singular arcade experience. On the latest mission to Mars, the Orion III crash-landed. With Martian attacks looming, Houston most definitely has a problem!
Star Hive: The Menace$0.99
This game is based on the neo mode of ''Galaxy Wars'' from 1995. Star Hive: The Menace, is the first in a franchise, there will be a sequel with three more games to continue the story. The objective is to use missiles stored on an Earth defense coalition freighter to destroy invading enemies.
Revenge of the Titans$19.99
The ultimate mash-up of Real-time Strategy and Tower Defense!
Project Astra Dominium$9.99
Project Astra Dominium is a Tower Defense game with Basebuilding and Automation elements. Build up your base to become a supply hub for Earth's desperately needed materials, gather resources while defending against an unknown alien threat and improve your tower's and AI capabilities.
Alien Hallway$4.99
Players measure stamina with a never-ending stream of green creatures within the borders of a special military mission.
Space Cheese Defenders$3.99
A tower defense game with RTS elements about gathering cheese in space, where mobile carriers are able to deploy smaller spacecraft. Collect cheese to buy and upgrade spaceships and use each type to customize your playstyle and defend your base!
Secrets of Magonia$7.99
In this tower defence game, you enter the world of Magonia and defend it against hordes of humans, orcs, ogres and other evil forces. Fight in different areas and adapt your strategy to the terrain and the enemy forces.
BlackChain$4.99
A classic single-player RTS set in a Solar System ruled by megacorporations. Journey from Mars all the way to Planet 9 and uncover the secrets of the BlackChain.
SPACE BATTLE: Humanity$1.99
The day has come… Humanity has been attacked by an alien race.You have space bases at your disposal. Use them to launch battleships and take over the alien mothership.
Planetary Defense: An Orbital Turret Defense System$1.99
2D space shooter and turret defense come together to create the Planetary Defense System this world needs! Shoot down asteroids and aliens and survive the bosses in this arcade like game featuring customizable satellites, projectiles, and upgradable Cannon and Planet Shield systems.
Super Sanctum TD$4.99
Super Sanctum TD is a retro-styled Tower Defense game that focuses on strategy, customization and replayability. Build advanced mazes and construct powerful towers to prevent alien hordes from reaching the Core!
_OUR_:_Defense 2021$4.99
Is a dynamic tower defense game. You must react and counterattack the enemies on the battlefield all the time. Fight off alien swarm attacks with gigantic machine guns, shotguns, gauss rifles and even a giant laser created using alien technology.
Ad Astra: Sci-Fi Tower Defense$4.99
Lose yourself in an indie solo-dev. treasure that harkens back to arcade classics! All while thumping along to killer retro-inspired beats by Ovani sound. Embark on an epic tower defense adventure against awe-inspiring machine monstrosities, made by a devoted gamer for devoted gamers.
Anomaly: Warzone Earth$9.99
Lead an armored squad through the perils of this reversed tower defense action-strategy game!
Rogue Station Defense$7.99
A rogue-like sci-fi Tower Defense strategy game with infinite replayability!
Nexus Defenders$4.99
Tower Defense meets a Visual Novel narrative. Place an arsenal of towers to halt the invading enemy. Use special abilities such as napalm strikes, EMP blasts, and orbital lasers. A sci-fi space drama, filled with dialogue choices.
Save the Llama$9.99
Craft the perfect defense upon shifting platforms, turning gears, and railways to save your llamas from alien abduction in this space western tower defense.
星旅：前奏 Wandering Planet: Prelude$3.99
Star Trek: Prelude is a space-based game that builds defense towers on earth to defend against alien invaders called Black Ember.
U.F.O. K.O. Tower Defense$1.99
U.F.O. K.O. Tower Defense: Place lasers, missile launchers, sniper turrets, and use combat strategies such as airstrikes and the space ray to repel waves of alien invaders in this sci-fi tower defense game.
CHAOTIC ERA$16.99
AT THE LIMITS OF EARTH, AT THE EXTREMITY OF HEAVEN. A REAL-TIME STRATEGY NIGHTMARE.
Alien Hallway 2$4.99
We're happy to present a new game in the Alien Shooter universe! Get prepared to unique tactical gameplay, lots of monster types and 8 fighter types allowing you create your own style of completing missions and defeating bosses.
Space Nature Attack Tower Defense$6.99
Space Nature Attack TD is a tower defense where you can level up and customize tower stats and elements to your liking! Fend off various types of alien creatures across many different sci-fi planet themed maps, biomes, and difficulties!
Paper Protocol$7.99
Paper Protocol is a Tower Defense game with elements of Real Time Strategy. Command a versatile mech and a squad of high tech turrets to defend the Paper Co. building from angry trees! Upgrade both yourself and your turrets to defend against the trees and their unique abilities.
PUFIWEHO$0.99
Protecting Us From Incredibly Worrisome Extremely Hostile Oddities...is what you will be doing with your football! Defend the Earth from the invading disciples of the Deranged Octopus, and learn the ultimate secret of the Universe.
Parkalien: a ludo in the space$2.99
A ludo in the space, in which you play with aliens? What more you can ask for?
Sokobalien$1.99
Do you have what it takes to build the biggest space farm in the galaxy? Help the alien reach this goal in this classic Sokoban puzzle style game! Push cows, sheep, pigs and chicken so that the correct UFO beams can abduct them. (Also, as a side-quest, collect all the hats you can!)
Protolife: Other Side$8.99
Reverse Tower Defense game where you control waves of creatures against towers. Protolife game spin-off.
Colonization Simulator$9.99
Colonize rich planets with vegetation or deserted moons. Build a functional and prosperous colony. Take care of your colonists. Experience adventures on distant worlds or build a colony on planets in our solar system.
Farm Invaders$4.99
Top down stealth based puzzle game about an alien stealing cows from a farm. Use futuristic gadgets and stay in the shadows to avoid detection. Get all golds in every level to appease the queen and bring honor to your colony!
Protect the Earth$3.99
You are the best pilot in the space force and the earth needs you to protect itself from an alien attack. Protect the earth and then go to the invader's planet to finish them off once and for all.
Farm Wars: The Farmer´s Wrath$0.99
When alien beings decide to invade and conquer Earth, they don't expect such a powerful enemy: A very angry farmer, join him in the battle against dangerous and lethal aliens and win back the farm that is rightfully yours.
Toon TDFREE
Toon TD is a free to play Tower Defense from Gee Studios. Defend your castle. Explore new environments. Face fierce bosses. Develop new and unique strategies for every level in this next evolution of the Tower Defense genre.
AstroWings: Space War$7.99
"Astro Wings: Space War" is a retro style, exciting and authentic bullet hell, space shooting game.This game brings you the thrill, urgency and fantastic experience of an authentic arcade shooting game.
Galandrix$0.99
Galandrix is a rogue like arcade game played from a top-down view and features both fast-paced action and real time strategic choices. Select your ship and blast off into the unknown against countless hordes of enemies.
To Your Stations!FREE
To Your Stations! is a couch co-op spaceship management game where up to four players work together to crew a spaceship. Coordinate the torpedoes, lasers, and shields of your ship to fight off asteroids, aliens, and other deep space entities.
Final Fort$3.99
FinalFort is a survival game with defense as the core gameplay, and when the end comes, you use the last human shelter to constantly dig minerals, build walls and various turrets to defend against the endless zombie army.
Expansion VR$14.99
Expansion VR is a tower rush RTS designed for Virtual Reality, featuring indirect control mechanics. Collect units, build your forces, and take down your opponent’s base in fast-paced battles against players or AI.
十字防守(X Defense: Timing TD)$2.99
Strategy, timing and fortune: Novel and immersive tower defense game experience!
Random Core Defense$3.99
"In 'Random Core Defense,' acquire and enhance cores using limited resources to withstand relentless enemy onslaughts. Defeat powerful bosses and test your strategy to survive until the very end!"
Project Myriad 2$2.99
Project Myriad 2 is a tower defense strategy game. Build towers on a grid of hexagons floating in space. 35 levels with unique tiles and mechanics each providing a unique challenge. 3 difficulty levels including extreme mode which has never ending waves of enemies. Strive for your new high score!
Arms Evolution: ZOMBIE DESTROYER$5.99
"Arms Evolution: ZOMBIE DESTROYER" is a unique Roguelite tower defense game. You will slaughter thousands of zombies in the game and enhance your weapon towers through build character in the RPG way. and , the game also offers an idle mode, so you can enjoy building weapons anytime and anywhere.
Robowars$3.99
Robowars is back on Steam! Fight off troops of droids for freedom and honor in our classical tower defense game. Lead the forces of the Solar Union to protect the peaceful planet of Praymos from the aggressive Trade Confederation.
StarDrone VR$4.99
StarDrone is the Hyper-Kinetic Race across the Galaxy with mix of pinball, arcade action and breakout, now in Virtual Reality.
Pit Blocks 3D$19.99
Pit Blocks 3D is a cube-matching arcade style puzzle game where you manipulate falling bricks of different shapes and sizes. The goal is to stay alive as the speed increases over time – and to rack up as many points as possible before the pit fills up with bricks!
To the earth$0.99
You are going to drive to the earth from mars. drive safe!
Starwulf$2.99
Dive into Starwulf's unique blend of brick puzzles and space shooter action. Explore diverse planets and star systems, unlock special missions, and upgrade your ship. Can you save your home planet? Casual subgames, included to the demo version, offer endless fun.
TerraCube$4.99
Race against the clock to terraform cube-shaped planets and tackle over 20 unique minigames, each offering a different challenge to test your skills and strategy. Earn trophies in quick, time-paced games, and use them wisely to buy new lands and tackle even more goals.
Invaders from the Third Dimension$0.99
A retro space shooter with a twist - now you can rotate your ship and aim diagonally at enemies, adding a whole new dimension to the shoot 'em up genre.
Last Meow StandingFREE
This lightning fast arena shooter brings you right back to the highscore hunts of the arcade era. Use your arsenal of deadly weapons wisely against the increasingly ferocious monster hordes to survive as long as you can.