Top similar games like Omnicore: Freiza's Retribution:

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.

Desperate Place is a strategic tower defense game where you play as a crew member who wakes up early on a damaged colonization starship. Stranded on an unknown planet, you must gather resources, repair the ship, and defend against alien monsters to survive and escape.

Defend your Starbase in a vibrant roguelite shooter. Upgrade your weapons mid-run, unlock permanent rewards, and survive the endless onslaught.

Heroes Rally is a casual strategy tower defense game. Build towers with different characteristics and command heroes to repel all the enemies. Go and develop a your unique and powerful strategy!

Immerse yourself in this Vertical Shoot 'Em Up 80's Style Arcade, with unique Graphics & Sound. The game includes Ships, Missiles, and Special Weapons upgrades. Shoot enless waves of Viruses, Amoebas, Spores and Bosses. Protect the Containment Wall, do not let the Exuoa virus through.

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.

Become Romby, a tiny crystal lost in space! Survive and defend the crystal against dark waves by upgrading crazy weapons, planting strange flowers, and using tarot cards. Explore constellations, defeat bosses, and unlock over 100 unique skills.

Good old fashioned 2D arcade fun with tons of upgrades and fast paced action where taking risks is rewarded with a higher score. Defend humanity's last source of energy wrench in one hand, laser gun in the other

Side-scrolling mech action game. Three guardian mechs, three ways to play, with fighting moves designed by a world fighting champion. Protect the core and survive thirty waves of monsters.

Build your towers according to the enmey you are facing in the wave. Upgrade your turrets to increase range, damage or rewards. Each enemy wave will be random and increases in speed and damage resistance. How far can you go!

Crash-landed on an alien world after your station is overrun, survive ten escalating nights until rescue arrives. Dash through the swarm, collect alien data and material, build new weapons, and take down deadly Bounties in a fast-paced sci-fi bullet heaven.

A tactical defense game where you build the battlefield itself. Lure enemies through your maze using traps, towers, and godly powers.

Take command of your ship, step into the arena, dominate your opponents, and put your reflexes and skills to the test!

Halo: Spartan Assault brings the excitement of Halo combat to Steam for the very first time. Battle your way through 30 action-packed missions against the Covenant as you explore the origin of the Spartan Ops program featured in Halo 4. *DirectX feature level 10 required. *

‘Space Squad’ is a top-down space shooting survival game. Protect your central circular base and aim at enemies with your mouse. Earn skill points by defeating enemies to unlock various abilities. Face waves of incoming enemies and do your best to survive.

A quick arcade-style shooter where you constantly have to weigh choices between improving your stats, expanding your mines, building your defenses or going on the attack, before the enemies either take your resources or overrun you 

Unknown planets, whole new universe, with hundreds of ships to fight and explore, special abilities and ships craft. Rome 2077: Space Wars is a top-down shooter with ship craft, storyline, RPG element, survival endless mode and much more!

C6: Frontlines is a bullet hell co-op roguelike where only YOU (and your friends) can bring the Azapall galaxy to peace. Wield 30+ weapons and gadgets of mass destruction to even the playing field, wave after wave, against a seemingly endless onslaught of evil!

Dodge waves of bullets in cover shooter + shmup-inspired combat, as you strike back with powerful attacks of your own! Use clever cover spots to gain an advantage over your enemies, find treasures to make yourself stronger, and avoid taking damage to raise your score!

Fight gigantic hordes of goblins with a supercharged vehicle and arsenal of crazy weapons, in a chaotic physics-based battle for survival

Spectral Realm is a top-down tower defense Rogue game, where players need to play the role of an astronaut who has just landed on a different planet to block a constant stream of attacking native creatures and continuously strengthen themselves with the gems contained within their bodies.

Slice them, burn them, skewer them, and launch them - no matter how you get it done, orcs must die in this fantasy action-strategy game from Robot Entertainment.

Clock in as a defense technician and fend off hordes of aliens with your armored train. Choose your carriages and build up your armored train to maximize defensive firepower in this bullet-heaven roguelike. Apply Today!

Darkship Echoes is a tense, atmospheric sci-fi top-down shooter where you pilot a remote drone through a dark, derelict space station, using radar to scan for threats, fight rogue machines, and scavenge supplies to survive.

Save Our Solar System brings a fresh look on the tower defense genre. Shape the world around you with a lovable playable character. Harvest metal to upgrade towers. Collect rocket parts to advance to further planets. Fend off endless waves of asteroids.

Active tower defense fused with a twin-stick shooter. Build your defense grid & become the death machine that exterminates the B.O.R.C infestation, one roguelike run at a time.

Forest TD is a top-down strategy game blending tower defense, survival, and elemental magic. Explore a vast forest, transform trees into defensive towers, and combine elemental abilities to fend off relentless waves of enemies.

Join Captain Rijk as he attempts to escape from the clutches of one of the most villainous species in the galaxy. Help to uncover the horrors that are being carried out on the fringes of the civilised galaxy and become the divine being prophesised to inspire an uprising and destroy The Domain.

A tower defense game where you fight next to your base. Robots attack your Core from every side. Walk the field, shoot, grab Scrap and build turrets while the fight goes on. Every run ends with a Guardian, and the AI chips you recover carry over to the next one.

Battle and build in a top-down shooter in a real-time tactical war. Lead your squad and your people as they grow. Build new or reinforce old strongholds that must hold while you push on. The war is growing, so too must you.

WarShape is a "Top Down Shooter" where you face growing hordes of enemies. As you progress, the weapons and defenses of everyone in the arena evolve, starting from primitive equipment to technological weapons. Build, find weapons, recruit allies and buy upgrades to survive the attacks.

In a fantastic and unique land, dark creatures seek to destroy the peace of the world and rule the earth. Help the Mages to defend the world against them building traps in their path and using magic in a colorful and happy environment

Spells and Fellas is an action-packed survival game with magic-based combat. Bring your enemies to their knees and receive more powerful spells and equipment as loot. Recruit allies to fight alongside you to increase your chances of surviving all 100 waves of enemies.

A holographic goldfish commands an octopus pilot in this 2D action tower defense game. Build towers, fight alongside them, and redirect power where it’s needed most. Hold back the waves, repair your crashed ship, and escape the alien planet.