Top similar games like Galaxy Pirates:

An idle defense game at the bottom of your screen. Build your squad, upgrade your base, and hold the line against relentless alien waves while you work or browse.

Attack of the Zektoids! blends active ability timing with deep incremental progression. Buy turrets based on elements and elemental synergies. Choose upgrade paths for each turret. Defeat strong Zektoids to receive powerful gear. Prestige to unlock permanent upgrades.

StarShipdle is an indie game that runs on your monitor while you do other stuff. You’ll be overseeing a spaceship as it explores the universe, managing upgrades, tracking progress, and following the story.

Defend your planet from relentless stream of incoming asteroids in this fast-paced 2D tower defence game. Strategically place defensive buildings and upgrade your arsenal to protect your world from destruction!

An idle auto-battler that sits in the corner of your screen while you do other things.

Defend your starship in this endless sci-fi tower defense game! Form your ultimate squad of 2D heroes, permanently upgrade your spaceship's hull and defenses, and unleash powerful ultimate abilities to survive relentless waves of cosmic alien invaders in the vast void.

Conquer your enemies in space, strengthen your ship with stats, and progress even in the background. A relaxing idle experience awaits you!

An idle incremental adventure in space! Mine asteroids while fighting off enemy AI drones. Build your own AI drones, mining lasers, helper drones and more. Collect hundreds of rewards and unlock a variety of features that will help your ultimate goal: making numbers go up (or sometimes down).

A pixel idle tower defense where your kingdom fights on its own. Workers gather, your army auto-battles endless waves, spells self-cast — you aim the bow, chain combos and choose what to upgrade. Bosses, titans, prestige, 100+ achievements. The night is endless. The bow is yours.

Fight off a galactic threat in this idle clicker game. Battle waves of enemy ships, progress actively or passively, and save humanity. With over 200 high-quality ship models and background mode, watch your fleet soar across your desktop while you work!

A game where you will command 4 heroes (TD) in the defense of Earth from an army of AIs. Create cannons, place them in strategic locations, and level up. Each stage increases in difficulty progressively. You will also command the 4 heroes' ships and can even count on the help of a super robot.

A short relaxing incremental game disguised as a tower defense, but enemies can’t reach your walls. Thanks to lava.

Construct colossal megastructures in this industrial, retro-futuristic idle game. Manage grid-based modules, explore exotic star systems, and unlock the secrets of reality through exploitation and optimization.

Build the ultimate hero formation on a tactical grid, then watch your team crush endless waves. Level heroes, collect mounts, farm pets, dig into mines, and prestige across 17+ worlds, all while you're away. A deeply layered idle RPG with real strategic depth.

An asteroid mining based idle game. Travel in space and discover.

A short incremental game about building a career by destroying planets, meeting corporate goals, and investing in profitable — and maybe not so ethical — ventures.

Cultivation Tower is a 2D xianxia idle incremental auto-battler. Summon projections and cultivation allies, invest Spirit Stones in upgrades and Methods, collect Treasures that persist through rebirth, and climb toward higher realms and tougher floors.

Idle Protocol is a minimalist sci-fi tower defense and incremental game. Manage a central CPU core, equip exactly 2 Nodes, and defend against geometric anomalies. Perform a System Reboot to earn Cycles and unlock permanent modules in the BIOS!

Idle zombie defense where you grow your colony, earn passive income, and survive endless waves with automated combat and strategic upgrades.

An idle clicker where you grow one small planet into a galactic empire. Click Earth, colonize living worlds across star systems, build Dyson Spheres, catch comets and reset reality with the Big Bang. Your civilization keeps producing even while the game is closed.

Forge insanely rare turrets in an incremental idle tower defense. Hunt impossible loot, unlock powerful relics, expand your skill tree, complete quests, and discover game-breaking synergies as you chase the rarest drops imaginable.

A minimalist hero‑driven incremental tower defense game. You are an Einherjar guarding the Godcore crystal as Helheim’s horde rises to break it and reach Midgard.

Clankers! is a short incremental robot killing game. Kill Clankers, gather money and spend it on weapons and upgrades to stop Clankers from stealing our jobs!

Raise and equip dragons, expand your tower, manage resources, and defend your kingdom across five enemy realms in this colorful 2D idle tower-defense game.

Lazy Galaxy 2 is an idle/clicker game with base-building and RTS elements. Lead an evil (albeit lazy) alien race to conquer the universe! Expand your base, fight vicious foes, and conquer the galaxies. Acquire combat experience and convert into candy, the most precious alien resource!

Incremental Mazing Tower Defense. No lives, just make more gold. No fixed mob path, create the best maze ever.

Destroy endless waves of alien ships that have all but wiped out humanity in this long form, unfolding, sci-fi idle game. Customize your ship with different weapons and defenses to defeat specific enemy types and utilize a ton of different systems to increase your overall power.

Deep Space Cache is a short & simple semi-idle bullet heaven incremental asteroid miner game.

Last Watchtower is a short incremental defense game. Gather resources, pick upgrades, and unlock powerful tower abilities. Experiment with diverse builds, withstand relentless monster waves, and grow stronger with every run through permanent meta-progression.

Space Colonizers is a simulation and strategy idle game of Sci-Fi adventure theme. To explore more planets and meet cute aliens, you have to constantly install parts and upgrade spacecraft.

Trade your time for the ultimate loot grind. Equip powerful gear, stabilize a collapsing timeline, and reset your existence for permanent buffs. From Worn Artifacts to game-breaking Exotics, DeadEndGram is a 1-man passion project for the 3,000-hour Guardian. Cheat codes included.

Flowchart is your weapon. Recursion is a strategy game merging logic circuit design with tower defense. architect their paths, and defend the system by engineering the perfect logic loop with maximum efficiency.

Ever wanted a Dyson swarm of your own? Now you can have one with just a few clicks! Manage a solar empire, produce bots which will make solar panels for you. Send your panels to the sun to generate energy and sell that energy to make money which you can spend on even more bots!

Watch as stars battle for control of a simple simulated galaxy. Each star belongs to a faction, indicated by its color, and combat happens automatically between neighboring stars. Your role is to observe the dynamic battlefield as stars change ownership.