Top similar games like Space Mantlet:

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.

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.

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

Join our machine legion to conquer the world.

Co-op and Single player Tower Defense genre.

Tower Defense with resource- and base management! Waves of enemy robots with special abilities, shield and armor! Mining, refining and production for building and repairing! Environmental hazards and the best: the Orbital strike!

A grand and intense tower defense science fiction game, where you only need to purchase once to enjoy all the content of the game.

Galactic Garrison is a sci-fi, turn-based tower defense game where you defend your base from relentless alien waves on Mars. Deploy soldiers, build barricades, and upgrade defenses to withstand attacks. Earn powerful reward cards to gain strategic advantages and outmaneuver your enemies.

You are the commander of the Black Talons company, currently stationed in the Oberon system. After an eventful campaign, the military Tzanar Union has overrun the planet of Genai and blocked all departure from the system: leaving you and the Black Talons stranded.

The early stages of an RTS I created in a gap year. Create your loadout, send your mechs to battle, capture objectives and destroy the enemy base

Build and upgrade nine tower types, reshape enemy routes, and recover stolen data orbs in a sci-fi tower defense campaign. Fight through 20 missions, restore an abandoned network, and uncover the truth behind Command’s orders.

“Alien Marauder” is a real-time strategy game with survival and confrontation theme. In this game, you will be the leader to a treacherous alien planet, build and defend base to survive against the vexan waves. Make the right decision!

An exciting sci-fi real-time strategy game. You are the leader of a band of elite Marines on a rescue mission; it is your job to secure the outpost and rescue lost miners. Aliens are running amok; it won't be easy...

Protect the base from an alien invasion. Place cannons and destroy the invaders. Upgrade cannons to resist the enemies.

Kaiju Tactic is a Real-Time Tactics + Roguelike Monster strategy game! Mutate, Modify, and Evolve your monsters! Command your strongest monster squad through Roguelike stages!

2089 - Space Divided is a classic science fiction real-time strategy game in which you collect resources, build up your base, train troops and destroy your opponents with tactical skill.

Para Bellum - Hold the Line is a 3D real time small unit tactics game. Your task is to hold off enemy attacks wave after wave using a variety of different Units and Supports in your arsenal to the best of your abilities in Campaign and Skirmish modes.

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 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.

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 mechas, form mecha teams, and command them to fight.

Star Trek: Prelude is a space-based game that builds defense towers on earth to defend against alien invaders called Black Ember.

《热血指挥官》是一款科幻RTS游戏，实时战略对决，万人在线竞技。在危机与机遇并存的银河系中，你将成为一名银河指挥官，掌握高科技武器和装备，指挥数百个战斗单位，运用智慧和策略与异形及其他势力展开激战，书写属于你的星际传奇！

FRONTLINE ADVANCE: DARK FRONTIER is a classic 2D real-time strategy game in the style of the golden age of RTS, but with its own unique identity: three factions, a dark science fiction conflict, and authentic base-building gameplay that players have been missing for years.

In this game, you are a leader, leading a force of army to fight other forces in the deep spaces. You will plunder their resources, build your homelands, explore and expand, managing your army both strategically and tactically. This will be a saga written with blood and fire.

Build your towers, plan your efforts, watch out for changing paths and strike back against the alien invaders in this challenging tower defense game!

Defend real cities from night raids on a satellite map of the Earth. Build launchers, nets and radar by day. At night, hunt drones and missiles in the dark before they hit: every strike that gets through puts a city's lights out.

Build powerful defenses, collect loot, combine effects, and survive evolving waves from the void in a tower defense game driven by ARPG-inspired buildcrafting and persistent progression.

Lead the Mobile Infantry in this RTS game set in the Starship Troopers film universe. Balance your army composition with a diverse set of unit types, overcome line-of-sight and line-of-fire challenges through tactical positioning, and use special abilities to smash the Arachnid hordes!

A strategic space tower-defense game. Enemies detect, warn, and try to bypass defenses, forcing you to adapt. Combine diverse towers and face unique maps for varied battles. With tense sci-fi atmosphere, it delivers a fresh experience beyond traditional tower defense.

Defend galaxy against Alien invasion in the RTS offline game with roguelike fun

Build a sprawling base, power it with energy and alloy, and send hundreds of mechs, tanks and jets into one massive battle. Hide behind shield domes, research new technology, and when the time comes, launch the nukes. A sci-fi RTS fought until the last machine.

In this massive RTS game, command vast armies fighting for control of entire worlds. Control the forces of Earth, the mechanical AI Substrate, or the enigmatic Post-Human Coalition as you battle across the solar system in single player, cooperative multiplayer, or competitive multiplayer.

Build and defend your base, plan coordinated strikes, and command your forces in a cinematic real-time strategy game focused on tactical decisions over constant micromanagement.

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.