Top similar games like Space Annihilator:

They buried the truth. The invasion did not end. Now it is coming home. Grave Orbit is a dark sci-fi survival campaign of relentless escalation, impossible odds, and a war that grows far beyond anything humanity was prepared to face.

An adrenaline-pumping bullet heaven where death is permanent. Hire and evolve unique companions, discover 950+ weapons, and fight through swarms of enemies and bosses. Grow stronger every run, but if your team falls, they're gone for good.

Tower Tactics Arena is a fast-paced action roguelite set in the Tower Tactics: Liberation universe. Battle relentless enemy waves in a closed combat arena, level up your towers strategically, and gather powerful trinkets and potions! Will you claim victory in the arena?

Build, customize, and unleash your ultimate space platform in NebulArena, a fast-paced, fully automated PvP arena where strategy, design, and destruction collide!

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!

A run-based, autobattling, deckfighter. The deck you build is the enemy you fight. Choose the enemies you want to engage, discard the ones you don't. Unlock and guide autonomous drones, and acquire components, munitions, hacks, and modulators to stop planetary invasions in daily seeded runs.

HUDDLE BATTLE is a bullet heaven where you raze swarms of enemies, harvest their souls, and use them to summon your huddle. Your characters may attack automatically, but you would be a fool to underestimate its challenge ⚔️

This "space station builder simulation roguelite" puts you in charge of a space station. Fight off enemy ships, fleets and rival stations to dominate your corner of space. Build and upgrade your station, hire and manage your crew. Survive as long as you can.

The fusion of deck-building roguelike and tower defense returns, bigger than ever! Build your deck with powerful new cards, unlock unique trinkets, and deploy enhanced towers to overcome relentless waves of enemies and new strategic challenges.

A Roguelike Tower Defense in space with missions to conquer. Can you hold against the spreading alien bosses? Build and upgrade towers against the corruption. Choose your technologies and warpspeed your way to victory.

Drop Order is a dark sci-fi tactical tower defense where every turret placement shapes both your firepower and the enemy's route. Build synergistic defenses, create deadly mazes, and survive alien hordes with cards and hands-on drone combat.

Defend a central core in a neon geometric survival tower defense. Move and aim your operator, construct fortifications, research permanent upgrades, collect enemy ability modules, face evolving bosses, unlock endless mode, or cooperate online with up to four players.

Towerbloom is a pathless roguelite tower defense with reactive gameplay. Employ countless outlandish strategies and supercharge your towers by hovering over them to vanquish enemies.

Star Armada is a spaceship auto-battler where you assemble and command a fleet of capital ships and fighter squadrons. Unlock powerful new ships and outfit them with a range of turrets, energy shields, and starfighter hangars. Engage in automated battles, carefully timing unique abilities to win.

Hold on in the Dungeons - Time to Hunt

Prismachines is a roguelike, stationary, horde-survival, autobattler. Draft a team of geometric shapes, equip them with game-breaking trigger items, and position them on the grid. Watch your automated engine of destruction unleash screen-clearing chain reactions to survive 20 escalating waves.

They came from the void. You are all that stands between them and our annihilation. Command and fight alongside an immense fleet, upgrade your ships and take back our homeworlds in this spacefaring roguelike RTS.

Build your city block by block and defeat waves of mechs in this tower defense roguelike! Combine powerful cannons with unique effects to survive the unforgiving wasteland and explore the underground to gather resources and find powerful relics.

Build by day, hold the line by night. A pixel-art roguelite where you raise a village, recruit heroes, and watch your formation hold or break against waves of monsters in real-time auto-combat. How long can you hold the gates?

A roguelike tower defense game where you strengthen your single tower through a tactical cluster board. Rotate, connect, and optimize cluster cards between waves, survive 30 waves, and take on Hardcore Endless mode with online leaderboards. Will you be able to keep up with the best?

In Destruction Snake, you start with a basic mechanical snake and dive into swarms of enemies. Weave through the battlefield, shoot, burn, freeze, and destroy your way through the horde, collecting scattered resources to continuously strengthen your build.

Build an army to fight absurdly large numbers of barbarians in this strategy roguelike, with an incremental twist.

Endless Coffee is out! Build your ship, survive 21 Days and break the Universe- Astro Prospector is an incremental bullet hell about mining coffee and fighting SpaceCorp. Collect resources, upgrade your ship and become unstoppable. Return AstroCoffee to humanity!

Breach. Fight. Loot. Repeat... Breach Squad is a top-down sci-fi auto-combat roguelike RPG built around corridor breaches. Your squad fights on its own - you command, manage loot, and grow marines permanently… But if they die, they’re gone.

A tower-defense roguelite with automatic attacks. Choose from 60 towers and combine 95 weapons with 100 upgrades. Survive 30 waves or challenge other players online. Every run brings a new build. Whose tower will stand the longest?

Fight waves of mutated creatures in this roguelite tower defense game. Turrets can be used to defend or to harvest — you decide! How much can you secure before being overrun?

A game about a gang of criminals that uses an old sedan and commits crimes, fends off cops, farms illegal resources, gets upgrades and builds up criminal power

A minimalist sci-fi tower defense. Buy soldiers and upgrade them, defeat waves of enemies, hold your lines.

Destroy humanity in this roles-reversed Asteroids game! This is a sci-fi strategy roguelite auto battler based on games like Super Auto Pets and Crops, where you launch asteroids at an human spaceship. Develop different synergies and builds with dozens of types of asteroids with unique abilities.

Siege of the Isletress is a tower defence survival game where you defend a lone fortress against hordes of enemies. Make meaningful decisions under pressure, exploit interconnected systems using 120+ distinct weapons and upgrades and uncover the secret history of the Isletress.

TurretFall is a fast-paced roguelite tower defense game. Build and manage your base, collect powerful upgrades, grow your economy, and survive relentless waves of enemies and challenging bosses.

Command a fleet of customizable ships in this roguelite strategy autobattler. Liberate planets to unlock new ships and powerful upgrades. Engage in strategic battles, manage your fleet, and face escalating challenges as you fight to free the universe through increasingly difficult galaxies.

NERMIUS combines sci-fi roguelite bullet hell survival with an incremental clicker mode. Deploy as a Shell, a corporate combat unit, fight alien fauna, collect upgrades, grow stronger, and uncover what Saturn Acme Corp won't tell you.