
A hardcore sci-fi survival game spanning 400+ procedurally generated star systems. Defend, mine, trade, fight, and command your way through a galaxy where five factions never stop expanding and every resource fuels your next desperate move.
60+ similar titles based on shared tags and player behavior. Themes include Indie, Strategy, Action, Tower Defense.

A hardcore sci-fi survival game spanning 400+ procedurally generated star systems. Defend, mine, trade, fight, and command your way through a galaxy where five factions never stop expanding and every resource fuels your next desperate move.

Rombykon
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.

Bluevolution
An incredible asteroid assault is about to begin! Take command of the planet's defenses and prevent extinction in this planetary Tower Defense game.
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.
Why similar: Tower Defense 23.3%, Strategy 18.8%, Space 16.1%, Top-Down Shooter 15.9%, Shooter 9.3%
An incredible asteroid assault is about to begin! Take command of the planet's defenses and prevent extinction in this planetary Tower Defense game.
Why similar: Strategy 42.9%, Tower Defense 23.4%, Space 21.8%, 2D 6.2%, Singleplayer 3.8%
Centauri Sector is a top down tactical space combat game powered by a dynamic turn based campaign, rpg elements, fleet management and ground base combat.
Why similar: Strategy 36.3%, Space 20.2%, Top-Down Shooter 14.2%, Shooter 12.4%, Action 12.2%
4 turrets, a ship in peril, and waves of enemies. Hold the line and defend the ship, robot.
Why similar: Strategy 28.8%, Top-Down Shooter 15.8%, Space 15.2%, Shooter 15%, Tower Defense 14.1%
PvP keyboard share space shooter, you and you buddy's duke it out on the same keyboard with a last assortment of vessels from light fighters up to capital ships, all with unique special abilities and weapon arrays.
Why similar: Strategy 30.3%, Top-Down Shooter 18.4%, Shooter 17.5%, Space 12.6%, Action 11.2%
A top-down 2D shooter where your health is happiness and the sad ones want to take it away from you.
Why similar: Hero Shooter 35.9% ★, Shooter 18.3%, Top-Down Shooter 17.7%, Action 10.9%, Combat 7.2%
You are an archer tasked with defending a castle from invading monsters. Inside the castle, you can manage resources and harvest crops, gather experience points to level up, and learn new skills and abilities to face stronger enemies.
Why similar: Tower Defense 40.9%, Strategy 26.2%, Shooter 12.3%, Action 8.6%, 2D 6.8%
Sleep Tight is an adrenaline pumping arcade-style, twin-stick shooter with base-building elements and wrapped in blankets of nostalgia. Construct your strongest pillow fort during the day to defend your bedroom from endless hordes of monsters each night.
Why similar: Strategy 36.4%, Tower Defense 25.7%, Shooter 20.2%, Action 12.8%, Indie 4.9%
Celestial Wardens is a sci-fi tower defense game where you command a lone spaceship to defend a planet under siege. Survive waves of enemies, build turrets, upgrade your ship, and manage your planet to prevent total annihilation.
Why similar: Tower Defense 26.7%, Space 18.9%, Strategy 18.6%, Top-Down Shooter 17.9%, Shooter 12.4%
Space Run is a «real-time spaceship construction strategy game». Space Run takes the well-known Tower Defense-style gameplay and twists it, challenging you to manage and protect a spaceship and its cargo against the hazards of deep space!
Why similar: Tower Defense 40.9%, Space 28.1%, Strategy 22.4%, Sci-fi 4%, Indie 1.8%
Space Run Galaxy is the sequel to Space Run, the game from one-man studio Passtech, which seduced hundreds of thousands of players with its dynamic and original gameplay. By twisting the tower-defense game style, Space Run offered an addictive real-time spaceship construction strategy experience.
Why similar: Tower Defense 37.7%, Strategy 36.2%, Space 22.6%, Indie 3.5%
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.
Why similar: Tower Defense 20.2%, Space 17.9%, Top-Down Shooter 15%, Strategy 12.6%, Shooter 12.4%
FLEETCOMM is a tactical squadron combat game overflowing with hardcore maneuvers and space-borne gunplay.
Why similar: Strategy 44.6%, Space 21.4%, Action 14.5%, Shooter 13.9%, Indie 5.6%
Emperor Zaroc's forces invaded the planet Toi destroy the boss and regain control of the planet
Why similar: Space 28.9%, Shooter 27%, Combat 11.4%, 2D 10.9%, Top-Down Shooter 8.9%
Create the most powerful ship in the galaxy piece by piece, take it into battle and then lose your ship to a traitorous crew in an endless cycle of punishment and revenge.
Why similar: Strategy 47.8%, Space 22.2%, Action 11.4%, 2D 7.6%, Sci-fi 6.6%
Aliens are invading! Load up your guns and eliminate them with the help of ancient indigenous equipment in your backpack!
Why similar: Strategy 33.9%, Tower Defense 29.6%, Top-Down Shooter 20.2%, Combat 8%, Action 3.8%
A thrilling tower defense survival game where you lead a team of survivors against relentless zombie hordes. Deploy unique fighters, strategize with adjutants, and adapt using roguelike upgrades. Defend your home, battle epic bosses, and survive the apocalypse!
Why similar: Strategy 26.9%, Tower Defense 22.8%, Hero Shooter 21.4% ★, Shooter 13.9%, Top-Down Shooter 12.4%
Be the Gun & the Architect. Arcade-Tower defense hybrid with controller-first design for a snappy tower building and twin-stick shooting. Every kill feeds the machine. Adapt to roguelike chaos with unique items and synergies. Can you build the ultimate defense & survive the Derp?
Why similar: Tower Defense 24.7%, Top-Down Shooter 17.4%, Space 17.2%, Strategy 15.7%, Shooter 11.8%
Neonis is a highly action packed top-down shooter in which you try to survive as long as possible. The game has a couple different gamemodes, such as: Classic, Chaos, Dodge and Flood. Pick up the buffs to have a higher chance of surviving for a longer period of time.
Why similar: Tower Defense 26%, Top-Down Shooter 21.2%, Space 20.8%, Shooter 10.6%, Action 5.6%
Anomaly Warzone Earth Mobile Campaign continues Steam's Anomaly Warzone Earth in an extra 15-level campaign. Originally released on mobile devices, the campaign is brought to Steam for PC, Mac and Linux exclusively in Anomaly Bundle. AWE Mobile Campaign turns tower defense on its head.
Why similar: Strategy 50.2%, Tower Defense 26.5%, Action 15%, Sci-fi 5%, Singleplayer 2%
Exclusively brought to Steam for PC, Mac and Linux in Anomaly Bundle, Anomaly Korea is an expansion campaign to Anomaly Warzone Earth. The alien robots are back and this time they’ve got Korea in their sights. It’s your job to lead a squad into fierce fire-fights and fend off the alien invasion.
Why similar: Strategy 50.5%, Tower Defense 27.6%, Action 13.5%, Sci-fi 5.3%, Indie 1.8%
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.
Why similar: Tower Defense 26.1%, Top-Down Shooter 21.2%, Strategy 17.3%, Shooter 10.5%, Combat 9.4%
This chaotic fast-paced planetary defense game will have you shoot, jump, dash, and teleport across a fully destructible planet to fend off enemies flying in from all directions. Switch between multiple unique turrets, upgraded to suit your play style, for eye-popping synergetic plays!
Why similar: Tower Defense 25.8%, Space 22.4%, Shooter 19.6%, Strategy 18.8%, Action 8.2%
Phantom Signal is a real-time sci-fi strategy game with unusual mechanics. Explore mysterious star systems and reveal the secret of the phantom signal.
Why similar: Strategy 36.1%, Tower Defense 28%, Space 25.4%, Sci-fi 6.1%, Singleplayer 2.6%
Lead an armored squad through the perils of this reversed tower defense action-strategy game!
Why similar: Strategy 46%, Tower Defense 33.3%, Action 7.6%, Sci-fi 6.1%, Singleplayer 3.6%
This is a game in the rougelike genre. Where you'll control your character through challenging, dramatic battles. The game offers many character customization features such as character upgrades, weapon upgrades, equipment systems, support drone systems.
Why similar: Strategy 31.1%, Tower Defense 19.2%, Shooter 17.6%, Top-Down Shooter 13.7%, Action 9.6%
You Will Die is a indie game survival shooter top-down with waves of zombies to kill.
Why similar: Hero Shooter 32.3% ★, Strategy 28.3%, Shooter 16.9%, Action 10.4%, Combat 5.3%
After assuming command of one of four human or alien factions vying for galactic dominance, immediately define your game’s scope. Play for minutes to hours across tens to hundreds of planets in single-player skirmish or multiplayer modes—it’s entirely up to you.
Why similar: Strategy 54.8%, Space 27.5%, Action 13%, Indie 4.8%
Spaceships and Cellular Automata is a tower defense game set in space! Place different towers to defend your ship against the waves of aliens. The enemies are simulated based on Conway's Game of Life. Even just one of your bullets is enough to cause a destabilizing chain reaction to destroy them!
Why similar: Tower Defense 33.2%, Strategy 27.7%, Space 26.9%, 2D 5.2%, Sci-fi 3.5%
Anomaly 2 is a sequel to the critically acclaimed Anomaly Warzone Earth. Maintaining the core elements of the original, Anomaly 2 adds plenty of new features: unit morphing, over million tactical combinations, post-apo world and tower defense vs tower offense multiplayer mode.
Why similar: Strategy 43.6%, Tower Defense 34.8%, Action 10.3%, Sci-fi 4.8%, Indie 4%
M.A.C.E. Tower Defense is a classic tower defense game with unique towers and enemies and an ingame shop system for getting better towers, upgrade existing towers and buy special items.
Why similar: Strategy 42.1%, Tower Defense 34.2%, Action 13.7%, Indie 5.1%, Sci-fi 5%
Space resources are the battleground for warring factions. As a Space Defense Officer, protect your faction's assets in a vast, hostile universe. Allocate resources, upgrade defenses, and repel relentless enemy attacks! With over 50 unique units and deep strategy, experience real-time tower defense!
Why similar: Tower Defense 33.9%, Space 28.7%, Strategy 23%, Sci-fi 7.4%, Singleplayer 4.7%
Raven Fighter is a classic shoot‘em and roguelite game where players can customize their favorite weapons to defeat the final boss. Different weapon combinations result in varied outputs, accompanied by rich visual effects for an enhanced gaming experience.
Why similar: Space 37.2%, Combat 17.5%, Shooter 12.9%, 2D 12.2%, Action 10.9%
Solar Defense is a Military Sci-Fi inspired Tower Defense game focused heavily on strategy and decision making. Defend key locations and repel the Pilakarr forces back to their home world to end their attack and bring an end to this war.
Why similar: Strategy 28.5%, Tower Defense 26%, Top-Down Shooter 17.9%, Action 10.6%, 2D 5.9%
Grab up to 3 friends to fortify a graveyard camp and hold off hordes of undead using tons of weapons and buildings!
Why similar: Strategy 46.7%, Tower Defense 19.3%, Action 16.1%, Shooter 11.7%, Indie 6.2%
A 3d tower defense game set in space. Protect the last resource outposts from the ongoing Alien attacks! Can you hold out in these ever increasing difficult waves of enemies and protect the last of your resources and Energy?
Why similar: Tower Defense 28.2%, Strategy 18.3%, Space 18.3%, Top-Down Shooter 15.5%, Combat 6.7%
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.
Why similar: Tower Defense 18.7%, Space 16%, Top-Down Shooter 14.6%, Strategy 13.3%, Shooter 12.1%
Our game is a basic tower defense game where monsters are coming in through a portal are trying to destroy your tower! The only way to stop them is to send out your units, level up your tower and try to outwit them!
Why similar: Tower Defense 38.8%, Strategy 36%, 2D 7.8%, Magic 6.8%, Singleplayer 5.5%
Fight gigantic hordes of goblins with a supercharged vehicle and arsenal of crazy weapons, in a chaotic physics-based battle for survival
Why similar: Strategy 26.3%, Tower Defense 23.4%, Shooter 16.7%, Top-Down Shooter 16.6%, Action 9.9%
The sequel to the hit strategy game, with new weapons, landscapes, and options.
Why similar: Strategy 46.6%, Tower Defense 33.8%, Action 14.4%, Indie 5.2%
A Tower Defence game, that actually allows you to sit inside the turret and come face-to-face with the enemies! Addictive strategy - action game, with loads of shooting and explosions! Nearing 2 MILLION DOWNLOADS!
Why similar: Strategy 48.4%, Tower Defense 34.2%, Action 12.8%, Indie 4.6%
A Tower Defense Action game, set in a bright geometric world. Combine shooting skills with strategic thinking to fight off waves of enemies, and defend your base.
Why similar: Tower Defense 33.8%, Strategy 27.8%, Shooter 19.8%, Action 9.8%, Singleplayer 4.2%
A fast-paced, hero-driven tower defense-like game where you dodge enemy attacks, cast unique spells, and survive relentless waves.
Why similar: Strategy 34.2%, Tower Defense 28.8%, Action 13.3%, Combat 8.2%, 2D 6.2%
As an asteroid miner, your goal is to complete different kind of missions from asteroid mining to securing the galaxy. Buy new more powerful ships, find rare equipment and reveal all the greatest riches of the space rocks.
Why similar: Strategy 56.2%, Space 26.1%, Action 12.8%, Indie 4.9%
A Tower Defense game made in the best tradition with 35 unique towers, 70 upgrades and 8 biomes. A 20 level campaign and 2 challenge levels for now, with more to come! Made by an indie developper.
Why similar: Strategy 57.3%, Tower Defense 35%, Singleplayer 5.3%, Indie 2.5%
Uninvited guests have invaded your lands. Stop them! Place traps, use explosives, place spikes and magic spheres to fight the enemy. Where to get resources, you ask?
Why similar: Strategy 41.1%, Tower Defense 31.6%, Action 13.1%, 2D 8.3%, Singleplayer 4%
A minimalist 2D tower defense game with 3 towers, 6 maps, and 4 monster types. Simple, fun, and perfect for quick strategy sessions!
Why similar: Strategy 42.7%, Tower Defense 35.7%, 2D 9.6%, Fantasy 6.7%, Singleplayer 3.5%
Lone Wolf is a game to become a captain of the space warship “Lone Wolf" where in a space battle opera. You will fall into the charm of a gun that emits a powerful firepower toward the enemies, and you will be attracted by the various charms of the space warship “Lone Wolf”.
Why similar: Strategy 36.1%, Space 33.1%, Action 20.6%, Sci-fi 7.7%, Indie 2.6%
Bumper Blitz TD redefines tower defense with gravity-powered physics and dynamic gameplay. Build, upgrade, and bounce enemies away in this thrilling fusion of strategy and action!
Why similar: Tower Defense 36.4%, Strategy 21.6%, Space 16.2%, 2D 10.1%, Action 7.8%
A cute yet dark and mysterious fantasy roguelike where you battle Egyptian gods using magical dice, collect powerful relics, and shape your final destiny through a blend of luck and strategy.
Why similar: Strategy 36%, Top-Down Shooter 20.6%, Shooter 19.9%, Action 14%, Fantasy 4.9%
Great strategy is timeless. Build, adapt, and defend across dynamic maps, solo or online - every session brings new strategies, new solutions, and new surprises. Now is the perfect time to enter the grid.
Why similar: Tower Defense 47.9%, Strategy 35.2%, Space 8.5%, Sci-fi 3.8%, Indie 3.4%
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!
Why similar: Tower Defense 31.8%, Strategy 18.6%, Top-Down Shooter 13.5%, Combat 11.3%, Space 8.5%
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.
Why similar: Tower Defense 21.4%, Space 18.5%, Strategy 15.7%, Hero Shooter 15.1% ★, Shooter 13.5%
Play as a giant troll in One Troll Army - a defense game about building forts, upgrading your troll, and fighting off waves of enemies. Play Against The Twitch Chat!
Why similar: Strategy 66.9%, Tower Defense 25.1%, Fantasy 2.8%, Indie 2%, Action 1.8%
Use your space fighter (S.F.77) to destroy enemy spaceships and collect energy from them. Use that to upgrade you speed, weapons, or improve shields which will allow you to survive even harder attack waves.
Why similar: Space 43.2%, Shooter 30.8%, 2D 13.5%, Singleplayer 8.2%, Indie 4.3%
A wild mix of action and classic Tower Defense formula. Plan your defenses and dive directly into battle.
Why similar: Tower Defense 43.1%, Strategy 26.5%, Action 9.4%, Combat 6.1%, Fantasy 5.5%
Epic sci-fi tower defense action with 16-bit era look and feel, pitching your colonists against an almost endless horde of hostile alien robots who strongly oppose your attempts of colonizing their planet! Deluxe version includes the soundtrack!
Why similar: Strategy 43.6%, Tower Defense 36.3%, Action 14.6%, Indie 5.4%
Modo Defense is a strategy tower defense game. Spin yut, similar to dice, to obtain various resources and summon or strengthen towers. You can customize your tower however you like. Specialize in multi-attack or strong one-by-one! And we have to stop the demons coming in. How far can you stop it?
Why similar: Tower Defense 44%, Strategy 39.4%, 2D 11%, Singleplayer 5.6%
Manny TD is a hybrid tower defense and third-person shooter with random in game elements. Join and get your personal high score!
Why similar: Strategy 30.7%, Tower Defense 26.4%, Shooter 18.8%, Space 11.2%, Combat 5%