Top similar games like Nemesis Galaxy at War:

In the distant year of 2359, previously unknown alien forces have attacked Earth and its colonies. You are an agent on a special mission sent by the global senate to repel the attack and stop the alien forces. 

A top-down survival roguelite. Pilot 21 unique ships, craft broken builds from cards, artifacts and weapon evolutions, and outlast endless hordes and colossal bosses across 4 worlds. Take on a 100-level Campaign with a scaling Threat level, or dive into infinite Survival. Every run is different.

To start the game, select a level from the suggested ones. Start your journey and defeat the boss to go further.

Gravity Slugger is an arcade-style wave defense game where you use gravity and orbital mechanics to fling projectiles at attacking enemy spaceships. Dodge enemies, gather salvage, and upgrade your skills with chaotic and deadly abilities in this physics-based 2D game.

A【Pixel style, rouge、type horizontal、 shooting、 defense 】 game

Pulse laser battles between you and enemies.

Spaced Liberation is a very small indie game about the liberation of a planet.

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.

Sanctum Arcadia is a game where you must fight your way through increasingly dangerous zones filled with enemies, hazards, and mystery. Sanctum Arcadia has a unique but still familiar progression system, challenging and engaging combat, all in a smooth Arcade-like experience.

Fast top-down space shooter with varied missions, relentless enemies, powerful ship upgrades, and most importantly, fire.

Explore, battle, mine, and upgrade your ship in a vast top down space adventure. Discover unique civilizations, conquer powerful galaxy bosses, unlock new galaxies, and forge your own path through an ever expanding universe.

Refighter is a lightweight Rogue-like flight shooting and strategy game where players will control spacecraft to engage in battles in space, equipping various bullets and upgrading their levels. Face off against a diverse array of enemies and Bosses.

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.

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.

TRAXION is a space-themed cave flyer featuring beautiful pixel art, great music, and tons of meticulously crafted physics puzzles.

A fast-paced roguelike space shooter where every credit counts. Fight through dangerous sectors, upgrade your ship mid-battle, and convert your earnings into permanent power. Because when you die, you keep what matters.

A top-down space shooter roguelike set in a handcrafted, procedurally-enriched galaxy. Coming soon.

Survive Planet Yubglub is a survival rouge-lite, where Earth Representatives must hurl dodgeballs while evading toxic slime aliens and their lethal projectiles. The Earth Reps. must carefully navigate through the harsh environment of planet Yubglub. Choose your character, and Survive Planet Yubglub!

War In Other Space, Role-playing game, first-person shooter, there are 15 maps in the game, smart enemies with artificial intelligence, cool Science Fiction Weapons and all this in other Space

Autothysis is a first-person tower defense game where strategy meets precision. Deploy turrets, manage resources, and fight swarms of insectoid enemies. Target weak points to shatter foes while upgrading defenses to survive escalating waves. Can you withstand the oncoming horde?

Lock a target, read the angle, and null your transversal for a clean shot. Turn direct hits into brutal volleys, stacking buffs, and wildly misplaced confidence. Perihelion: Rogue Orbit is a 2D space combat roguelite where you fit ships, control range, and make every shot count.

Drift through escalating asteroid chaos in this high-speed arcade space shooter. Master inertia-based movement, survive overwhelming destruction, and battle alone or with up to 4 players in frantic co-op and versus combat.

Command knights, aliens, and other historically dubious nations in a free real-time tower conquest game rebuilt from a 2009 iPad original. Grow armies, capture towers, and outmaneuver adaptive AI through 30 campaign levels.

Where is Earth is a top-down vehicular combat game. Traverse planets, evading threats and obstacles, in search of your crew. Gather resources to assemble upgrades, landing vehicles, space craft, weaponry and support modules to aid you in your fight against an unknown enemy.

A retro style space sim where you mine, trade, bounty hunt, pillage, and explore. In this game you choose you own path as you navigate the galaxy while balancing faction alligence and legality of your actions.

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.

Caveflyer is a campaign-driven bullet hell where you pilot a strike craft and command humanity’s space fleet in a desperate struggle against the Cyborg menace threatening the asteroid belt. Secure safe mining operations by driving them back—but danger lurks deeper than metal foes alone.

Earth Space Defenders is a starship twin-stick real-time shooter action game. Experience story of menacing green smoke that plagues whole universe. Supports steam multiplayer and party play with multiple controllers.

Physics-based arcade, top-down space shooter. Pilot the Salvager, collect salvage to upgrade your ship, balancing an economy by mining asteroids and fending off waves of enemy ships, ultimately growing so large as to destroy planets.

The solar system is on the brink of collapse! Using powerful alien technology, you must battle enemies, players, and the forces of gravity to escape and survive. Redemption is optional. Survival is not.

GalaxIverse is a top down fast paced vertical blastathon, Battle Fleets and formations of aliens with the occasional boss thrown in for good luck.

"Galactic Gladiators" is a 2D top-down shooter where you control a spaceship battling against enemy forces. Choose cards for unique abilities, collect crystals to upgrade, and defeat bosses to progress. Test your combat skills in this thrilling game.

A universe is dying — and you are its last spark. Blast through procedurally generated constellations in this fast neon action roguelite. Claim powers from fallen enemies, defeat the Guardians, and carry your heritage into every new run.

lone.AI is a space RPG roguelite. With challenging, relentless gameplay, each run has the potential to boost your ship's power, speed, and more. As a lone AI, fight your way through the solar system and uncover the secret behind the ZOSMA, an alien race that holds power over the system.

AstroWars is a top down 2d shooter with monsters and a blue gun. Earn score by killing monsters and try to beat your top score.

Gratuitous Shooty Game is a hobby space shooter made by the developer of Gratuitous Space Battles, reusing the art from that game :D.