Attack from Izar 2250
Alien attackers from the Izar system are invading Earth! Battle the extraterrestrial menace in endless waves in this tribute to classic alien…
100% of 2 Steam reviews are positive$0.49
Games like Planetary Defense
Chasing that retro and fast-paced feeling you got from Planetary Defense? These games could fill that gap nicely.
Guardian: Planet Defense
Take command of an orbiting defense satellite in this action-packed planetary defense shooter. Blast away at waves of incoming asteroids and crafty aliens before they destroy your planet. Scavenge powerful weapons from vanquished alien ships and turn them against your foes. How long can you survive?
Retro, Fast-paced, Colorful
$3.99Protect the Earth
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.
Retro, Fast-paced, Colorful
100% of 4 Steam reviews are positive$3.99The planet's rescuer
Protect the Earth inhabitants against attacks of alien space ships. The “orbital space tank” is at your complete disposal.
Retro, Fast-paced, Tense
50% of 2 Steam reviews are positive$2.99Planet Shield
Keep your planet from being destroyed by space debris. Protect your golden planet from asteroids by generating Tetris-like blocks. At the same time, you are able to fight back and shoot projectiles at any stray asteroids that make their way through the wall.
Retro, Fast-paced, Colorful
$2.99PLANET IMPACTER
Defend your planets from planetary colliders and alien attacks in this breakout-style game! Use your intelligence to protect the planets!
Fast-paced, Tense
$0.99PLANETOIDS
PLANETOIDS is a 2D hand-drawn game that is a retro space arcade game. In it you have to shoot and dodge meteors, comets and wandering planets in outer space.
Retro, Fast-paced, Colorful
82% of 11 Steam reviews are positive$39.99Orbital Siege
Reclaim the arcade. This is a high-octane space shooter where vibrant pixel art meets relentless alien armadas. Master your orbital defenses and survive the ultimate galactic onslaught.
Retro, Fast-paced, Colorful
100% of 4 Steam reviews are positive$2.99Planetary Defense Force
Jump into the shoes of an interplanetary defender! Grab weapons, build towers, expand ground economics and protect planets from space invasions in this unique mix of twin-stick shooter, tower defense and city builder game.
Fast-paced, Colorful, Tense
$5.99Orbital Defence Command
A third person arcade shooter set in orbit above earth. Craft and find puzzle blocks to liberate captured alien continents. Defend yourself and your blocks from constant alien attacks and avoid a variety of obstacles and disasters. Watch out for the enemy bosses when you liberate a continent!
Retro, Fast-paced, Colorful
80% of 5 Steam reviews are positive$0.99Asteroid Defender!
Defend humanity in this retro-inspired space shooter as you patrol the stars and blast killer asteroids from the sky. Keep power to the energy pylons while maintaining the defense shield protecting Earth to earn powerful upgrades for your ship. Do you have what it takes to protect our world?
Retro, Fast-paced, Colorful
50% of 2 Steam reviews are positive$4.99Earth Attack
Tragedy strikes as aliens attack Earth. You're left alone to pilot the last remaining spacecraft on its way back to Earth from Mars Colony. Avoid missiles, asteroids, enemy ships, and more as you accumulate high-scores in Earth Attack! Can you survive long enough or will you perish?
Retro, Fast-paced, Minimalist
97% of 33 Steam reviews are positive$2Orbit Defender
You are in the control of the Planetary Defense System of Earth. Your job is to protect Earth using turrets orbitting the planet. You have gotten full control of the planet and you are responsible to keep the planet intact.
Fast-paced, Minimalist
60% of 5 Steam reviews are positive$0.99
Cheaper than Planetary Defense
Space Hit
On SPACE HIT you finished your space mission, and it's just time to come back home, but your journey will not be so easy as you think...
40% of 5 Steam reviews are positive$0.49
Martians Vs Robots
Martians want to regain control of their planet! But we have not yet finished exploiting Martian mining resources...
33% of 6 Steam reviews are positive$0.69
Hell Madness
The leaders of the hellish hordes descended to earth and now plunge the world into an abyss of pain and suffering, but the servants of light took…
30% of 20 Steam reviews are positive$0.49
Space Intervention
Save our galaxy from the invasion of an alien race.
25% of 4 Steam reviews are positive$0.49
First Day: Home Defender
Build and protect your home after a nuclear apocalypse!
72% of 32 Steam reviews are positive$0.49
Cube Defense
You left alone camping in the mountains ... But during this time a virus has invaded the country and a cubic horde is heading towards you!
62% of 60 Steam reviews are positive$0.69
Gamma Space
You play the role of a spaceship surrounded by an asteroid field.
50% of 2 Steam reviews are positive$0.79
NEOMORPH
This is a simple tower defend like game,click mouse left button to shoot enemies, make sure you don't get hurt. Defeat Neomorph, fight with ladies!
75% of 670 Steam reviews are positive$0.49
Another Dungeon
Another Dungeon is a Tower Defense in which you must save your fortress from the Ancient Evil!
40% of 25 Steam reviews are positive$0.79
SALVATOR
All souls around of the world were taken by the shadows beings and trapped in asteroids wandering through space, but there is an angel known as…
78% of 18 Steam reviews are positive$0.49
Open Space 2D
Welcome to Open Space, the RPG where you fly planet to planet fighting space pirates and building up your ship to fight the Pirate Mothership.
$0.90
Hidden gems like Planetary Defense
Planetka
You play as a tiny sentient planet. Maintain your ecosystem, create new plant species and discover the hidden powers inside you.
89% of 183 Steam reviews are positiveFree
Space Wars
Defend Earth's orbital station from alien invaders in SPACE WARS, a fast-paced arcade shooter.
86% of 104 Steam reviews are positive$29.99
PLANETS OF WAR
This is a Short Clicking Adventure Game in which you Save Earth from an Alien Invasion.
59% of 304 Steam reviews are positiveFree
Forbidden Planet
"Forbidden Planet" is a Space Strategy and Tower Defence like Game.
51% of 139 Steam reviews are positive$4.99
Guardian: Planet Defense
Take command of an orbiting defense satellite in this action-packed planetary defense shooter.
$3.99
The planet's rescuer
Protect the Earth inhabitants against attacks of alien space ships. The “orbital space tank” is at your complete disposal.
50% of 2 Steam reviews are positive$2.99
Planet Shield
Keep your planet from being destroyed by space debris. Protect your golden planet from asteroids by generating Tetris-like blocks.
$2.99
PLANET IMPACTER
Defend your planets from planetary colliders and alien attacks in this breakout-style game! Use your intelligence to protect the planets!
$0.99
Protect the Earth
You are the best pilot in the space force and the earth needs you to protect itself from an alien attack.
100% of 4 Steam reviews are positive$3.99
Planetary Defense Force
Jump into the shoes of an interplanetary defender! Grab weapons, build towers, expand ground economics and protect planets from space invasions in…
$5.99
PLANETOIDS
PLANETOIDS is a 2D hand-drawn game that is a retro space arcade game.
82% of 11 Steam reviews are positive$39.99
Asteroid Defender!
Defend humanity in this retro-inspired space shooter as you patrol the stars and blast killer asteroids from the sky.
50% of 2 Steam reviews are positive$4.99
Newest games like Planetary Defense
Cosmic Crusher
Incremental game about protecting solar system. Destroy asteroids with a huge arsenal of weapons, upgrade your skills through a massive skill tree…
100% of 5 Steam reviews are positive$3.74
Pixel Orbit
Incremental game about defending Earth from impending danger.
78% of 36 Steam reviews are positive$3.99
Planet Keeper Program
You were chosen for the Planet Keeper Program. Defend the planet in this retro-inspired incremental game.
100% of 9 Steam reviews are positive$2.99
Fortified Space
Seize control of hostile planets in this nostalgic space sim and tower defense hybrid inspired by classic Flash games.
100% of 4 Steam reviews are positive$3.99
VILOVEJETS
The aliens have decided that Earth is an ideal target for an attack. Now, as the commander of a spaceship, you have to defend your home planet!
100% of 11 Steam reviews are positive$9.99
Orbital Siege
Reclaim the arcade. This is a high-octane space shooter where vibrant pixel art meets relentless alien armadas.
100% of 4 Steam reviews are positive$2.99
ESA SHIELD
Join the European Space Agency's SHIELD mission and discover why aliens aren't the biggest threat to us!
77% of 35 Steam reviews are positiveFree
Retro Space Shooter 8-Bit
Defend Earth in this fast-paced 8-bit arcade shooter. Survive waves of alien attacks, destroy the asteroid, and face the alien mothership.
100% of 6 Steam reviews are positiveFree
Intergalactic Defenders
Intergalactic Defenders is a retro pixel art space shooter with rogue-like progression, handcrafted levels, deep ship customization, and intense…
100% of 8 Steam reviews are positive$3.99
DEFENDit
Defend it! Are you sure you can defend the base until the last enemy? Try your luck because it's free to play!
80% of 30 Steam reviews are positiveFree
Planetka
You play as a tiny sentient planet. Maintain your ecosystem, create new plant species and discover the hidden powers inside you.
89% of 183 Steam reviews are positiveFree
Aim in Space
Help defend Earth's space base from invading enemy aliens in this incredible game to train reaction and aiming skills.
95% of 42 Steam reviews are positive$4.99