Top similar games like Planetary Defense: An Orbital Turret Defense System:

Mow down the alien hordes, scout for resources and survive. Dreadnought is a mix of Action Tower Defense Survival and Shoot 'Em Up Bullet Hell where you control the ships turrets & defend against waves of enemies. Choose your weapons, upgrade your ship & brace yourself, the horde is coming.

Dwarf Star: 16 bit inspired game where mercenary go shoot shoot on evil alien guys who were accidentally fabricated by the government. Top down space shooter with a mission based structure. However, you can do these missions in plenty of different orders with different amounts of upgrades.

Time and date are not important. Aliens have boarded a military vessel deep in space. Little do they know, #T217, a combat clone onboard the dreadnought, has been waiting for them. Use a wealth of weapons and mechanics to eliminate them with expert precision.

A top down 2D space shooter bullethell with roguelike elements awaits you. Dodge, weave and shoot your way through waves of enemies while gaining upgrades trying to survive as long as possible.

Defeat enemies and get parts! Build your own spaceship!

You've been dropped into enemy space. Weave your Starfighter between alien spaceships, lasers, asteroids and bombs destroying as many as you can and collecting valuable coins and powerups as you go.

This is a rogue-like top-down shooter where you control a spaceship that is sent out to explore the caves on the Moon. Once you enter the caves, you find out that there are enemies. It is up to you to survive against them while also trying to find the path down to the next level of the caves.

Welcome to an epic world of endless carnage, where you battle alien foes at lightning fast speeds, and engage in mind meltingly epic boss battles. Immerse yourself in a beautifully hand crafted world, with visually stunning top down graphics and unlimited action packed levels.

lone.AI is an upcoming space RPG roguelike. With difficult, relentless gameplay, each run has the potential to increase your ship's power, speed, and more. Explore the solar system and find out the secret behind the ZOSMA, an alien race that holds power over the system.

A vertical arcade shoot'em up with an inventive teleport system, lots of fast-blazing action and explosions, tons of boss fights, a risk/reward based score system and a proper challenge for both veteran and new players of the genre.

Stop the Saturnians is a shooter inspired by classic arcade games. Dodge enemy fire, destroy procedurally generated alien waves and fight massive bosses. Collect resources in the midst of combat to upgrade your ship or improve Earth's defenses. Protect yourself and the planet both!

In this highly addictive top-down arcade shoot-em-up from 1982, originally for the ZX Spectrum, defend yourself from wave upon wave of deadly alien combatants using your Ion Thrust Drive and dual Plasma Disruptors.

Stellar Space is a new take on a classic arcade game with a modern, rogue-like, form for new players to enjoy!

Tower Tactics Arena is an action roguelite set in the Tower Tactics: Liberation universe in which you'll fight intense waves of enemies in a closed combat arena! Level up your towers strategically and collect powerful trinkets and potions! Will you claim victory in the arena?

XenoFeud is an insane top-down twin-stick arcade alien shooter, where you must survive hordes of alien intruders while defending a mysterious object in space.

The best shooting game with various perspectives

Top-Down, Multiplayer shooter with PVP and PVE. Arenas filled with weapons to arm yourself with, creatures to shoot and stomp, hiding spots to crouch in and ambush from, and open spaces to dash around in. Carnage is a mayhem of blood, butts, and guts!

Repel extraterrestrial entities!

Scrap Bastion is a strategy tower defense game where you manage your city, equipping it to survive the waves of mutant creatures, testing your planning and decision making capacities at every turn. Watch out, as time is crucial to win!

This is a retro space shooting game, where you only fight against the strongest enemy. There are 15 unique bosses in the game, and players need to use different weapons and strategies to defeat them. Dedicated to you who are both challengers and retro game lovers.

Blast aliens to pieces and start a rebellion in this fast paced pixel art top down shooter where sprinting kills.

Escape corruption and deliver truth to the people in the only way you know how. as a space fighter pilot! You steal a ship and flee, it falls to you to duke it out in space and deliver truth to the people. Restore peace. Restore justice. Save humanity and Escape The Kreegan!

Welcome to the heart-pounding chaos of Neon Fighter, the ultimate test of your reflexes, adaptability, and decision-making skills! Brace yourself for an adrenaline-fueled arcade experience like no other. It's time to show the world what you're made of!

Battle massive hordes of alien monsters to secure humanity's presence on planet Gore. Upgrade your base, hire troops, and install turrets to fight back the ever growing waves of aliens.

Space Survival is the next great SIMPLE 2D casual space action shooter where you have to defend against wave of enemies, have fast reflexes and strong will to win. It is great way to relax, but also a great challenge. How long can you stay focused?

Fast Paced, Bullet Hell Retro Shooter! Shoot down enemies and dodge everything. Fight through 17 intense levels with 6 insane boss fights. Do you have what it takes to beat the game?

Customize your Gun Bots to fight through 7 unique worlds with different weather conditions that become more challenging as you progress.

I AM KILT is a twin-stick shooter roguelite where you fend off endless hordes of enemies. Combine upgrades to overwhelm the opposition and dominate the field. Do you have the forethought and skill to survive?

Defend against the creatures of that night! Protect yourself and your lamp by building and upgrading your base. Equip yourself with the best weapons to deal with the incoming waves.

A sci-fi shoot'em'up game with heavy focus on upgrades experimentation, featuring two unlikely heroes that must work perfectly together, despite their share of secrets, to surpass their limits and succeed in eliminating a threat that might destroy both Earth and Andraxia if left unchecked.

In the lost island of Alcatraz, try hard to survive. You can use a variety of weapons and skills to avoid and eliminate wild beasts and monsters, and finally eliminate the abyssal demons and escape. Be careful, monsters are different during the day and at night! Enjoy yourself!

Frantic 4-player laser ricocheting top-down shooter. Keep it casual and enjoy the chaos, or master the surprisingly deep mechanics to obliterate your enemies. Duke it out locally in free-for-all or 2v2.

Soar sky-high in Raiden III x MIKADO MANIAX, an electrifying entry in the classic arcade shoot-‘em-up series! Customize your music, wallpapers, game mode, and more before launching into high-octane aerial action!