Top similar games like Moon Defence:

Protect the lighthouse, destroy nests and complete tasks.

Invasion sequel. Our story continues where it left off. You are trying to find your father, who went on a mission to Mars years ago and was never heard from again.

Protect Mars from waves of enemies in "Mission: Mars." As Sergeant Eric, lead your team through 60 intense days of battle. Choose suits, upgrade weapons to ensure the survival of humanity's future on the Red Planet.

Rogue Planet is a roguelite first-person shooter set on Earth, which has been destroyed by a cybernetic crisis. Build your character using unique items, weapons, and active skills to defeat all enemies

In the future, humans conquered the stars and colonized other planets. In the bowels of the icy planet, scientists have discovered a natural and safe source of energy. But at the same time, they awakened an ancient alien life form. There is a conflict on the planet. Volunteers come to the rescue.

Freeman: The Resistance - is a single-player sci-fi adventure that seamlessly blends spaceship combat and planetary exploration. Unravel the mysteries of a richly crafted open world. Engage in thrilling battles, gather valuable loot and RPG elements to enhance your journey.

Occupy Mars: Prologue is an old introduction to the world of Occupy Mars in which you have to use your brain in order to survive. The Prologue tells a separate story in a closed location and shows a sneak-peek of the full game mechanics.

Former FBI agent and fishing enthusiast, faces an alien-zombie apocalypse after a virus escapes from NASA. Determined to rescue his wife, he defies the FBI and embarks alone to confront the threat. An epic rescue mission filled with action and suspense!

Prologue to Orange Cast, an atmospheric adventure in a large-scale setting where Soviet and Western science fiction are combined itself. As a humanity’s elite space trooper, you take on a heroic, action-packed adventure throughout the galaxy.

Lock and load into the Starship Troopers universe and join the Mobile Infantry in the most realistic depiction of war ever made! Experience an original story in this action-packed, first-person retro shooter. Would you like to know more?

Hardcore survival game set in a frozen harsh ambient

Survive in a ruined Biosphere on a hostile alien world. Endure, then harness the extreme weather, battle powerful bosses for upgrades, and uncover the mystery behind the planet’s lost atmosphere.

On a flying laser tank, fight the armed forces of the Empire and, after overcoming several planets, meet the Empress and fight her in a mortal battle.

Red Faction: Armageddon Path to War includes 4 new missions, 2 unlockable items and 10 new achievements!

Us Against Aliens is a survival shooter game on a spaceship that flies towards Earth. On the ship, something is constantly happening and you need to solve these problems along the way by shooting back from aliens who are constantly hunting you

RAZE 2070: Sci-fi FPS shooter. Stunning graphics. Arm yourself, face relentless waves of murderous robots. Hold the line! Unlock Steam achievements, reach the highest score!

Fight off waves of zombies in this single-player third-person and first-person shooter game. Battle of Rebels plays to your strengths and gives you the freedom to do more and be more while carving your own path to victory.

The new flames of war have ignited, and you will lead the mobile infantry regiment to defend the position. At that time, these damn Zergs will come from all directions, but I believe that under the leadership of your heroic lieutenant, you and your subordinates can definitely defeat these damn Zergs

On 24 February, Russia invaded Ukraine in an escalation of the Russo-Ukrainian War. Your task is kill the invaders. Use any available weapons: knive and axe, machine gun and grenades. Be careful, enemies are crafty and merciless. The fate of Ukraine depends on you.

Sharks of Mars: Prologue begins the story of an unlikely hero (you) who finds that little green men are the least of our worries on the red planet. Explore the Martian landscape, solve puzzles, and fight for your survival!

vertical scrolling shoot 'em up arcade game

UltraGalactic is an indie space combat game with inertia-based flight. Fly from agile fighters to powerful cruisers, use ship abilities and advanced weapon systems, and face a relentless alien threat in a single-player sci-fi campaign.

Air Strike is an action simulator of air combat, where every man for himself.

A sci-fi action-adventure game in VR.

ROW Realms of War, the ultimate First Person Shooter! Leave your legacy, encounter epic battles, and shape your path. It's all free – become the champion it needs. Let's play!

Enemies have conquered the moon and planned for destroying the entire world except them as they feel superiority over the world. Player has to go through intense space mission and destroy enemies.

Starship Troopers: Extermination is a 16-player co-op FPS that puts you on the far-off frontlines of an all-out battle against the Bugs! Squad up, grab your rifle, and do your part as an elite Deep Space Vanguard Trooper to take back planets from the Arachnid threat!

Choose a planet, build your fortress, and prepare for war. Arm yourself with powerful weapons, deploy troops, and defend your stronghold against relentless attacks. In this action-packed block-builder, survival is earned, and only the strongest will remain.

This game invites you to an action-packed adventure. What could you sacrifice to save a military base captured by aliens from aliens?