
Defend your base from relentless enemy hordes—solo or with friends! Discover unique planets, uncover the mystery of your mission, and unlock powerful items to help you survive.
60+ similar titles based on shared tags and player behavior. Themes include Strategy, Tower Defense, Singleplayer, Indie.

Defend your base from relentless enemy hordes—solo or with friends! Discover unique planets, uncover the mystery of your mission, and unlock powerful items to help you survive.

Spaceships and Cellular Automata
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!

Bumper Blitz TD
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!
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 41.6%, Space 23.6%, Strategy 13.4%, Aliens 10.8%, Pixel Graphics 7.3%
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 46.4%, Space 14.5%, Aliens 14.2%, Strategy 10.6%, 2D 5.8%
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 57.9%, Space 27.8%, Strategy 12.3%, Adventure 1.8%, Singleplayer 0.2%
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?
Why similar: Tower Defense 34.1%, Space 15.4%, Aliens 12.7%, Strategy 8.9%, Futuristic 8.7%
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 55.8%, Space 23.4%, Strategy 20.7%
Space Base is an action-packed tower defence game, where you aim to protect your planets from the incoming forces of enemy ships and aliens by any means necessary. Build up your defences as stronger and stronger waves of enemies arrive to reach the highest score possible.
Why similar: Tower Defense 39.8%, Space 12.7%, Strategy 12.1%, PvE 9.8%, Aliens 9.6%
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: Tower Defense 40%, Strategy 28.3%, Space 26%, 2D 4.8%, Singleplayer 0.8%
Aliens Falling from the Sky? reimagines tower defense with intense action and tactical depth. Build, upgrade, and combine powerful towers to stop relentless alien waves — because somehow, saving the world is your problem now.
Why similar: Tower Defense 46.2%, Space 23.7%, Aliens 17.8%, Strategy 11.6%, Singleplayer 0.7%
Defend the solar system from fearsome aliens by sending satellites into orbit in revolutionary tower defense action!
Why similar: Tower Defense 71.9%, Strategy 12.4%, Aliens 8.2%, Space 7.5%
Kingdom of Foundry is a pixel-style tower defense meat pigeon game. In the game, you will play as the king of a city-state, and ensure the safety and stability of the city-state by dealing with different events in each battle and recruiting different types of soldiers to repel waves of demons.
Why similar: Tower Defense 49.8%, Strategy 17.9%, Combat 10.7%, 2D Platformer 9.7%, Pixel Graphics 8.7%
Defend yourself from drones and alien creatures in this endless runner, first person shooter game on an alien environment! Collect in game currency to upgrade your weapons to survive!
Why similar: Runner 39.1%, Space 23.9%, Aliens 22.8%, Combat 13.5%, Singleplayer 0.6%
Tikiman the Forest Defender is in trouble. Hordes of monsters are sweeping through his realm, hoping to chow down on his offspring – and it’s up to you to defend them. By placing weapon towers at strategic points around the landscape, you can destroy the invaders and save the little ones.
Why similar: Tower Defense 71.3%, Strategy 14%, Online Co-Op 11.5%, 2D 1.5%, Co-op 1.5%
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 31.3%, Space 19.4%, Aliens 14.1%, Combat 8.1%, Strategy 7.5%
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 62%, Strategy 21.4%, Pixel Graphics 8.7%, 2D 6.9%, Singleplayer 1%
Sanctum 2 is the sequel to the world’s first Tower Defense/FPS hybrid game. Pick from four unique character classes and embark on a mission to protect the oxygen-producing Cores from hordes of deadly aliens who are threatened by their existence.
Why similar: Tower Defense 59.5%, Online Co-Op 13.9%, Strategy 8.3%, Aliens 4.9%, Futuristic 3.5%
Work together with your friends in this stressful 4-player couch co-op game as you defend against hordes of enemies trying to destroy your base. Manage both your time and your resources in an effort to balance all the needs of your base. Are you and your friends up for the task?
Why similar: Tower Defense 27%, Space 14.8%, Aliens 14.3%, 2D Platformer 10.6%, Futuristic 10.2%
Defend your base across four unique worlds in this 3D tower defense game. Battle waves of monsters, conquer 20 campaign levels, and climb the global leaderboard in the endless mode.
Why similar: Tower Defense 46.2%, Strategy 15.5%, Space 15%, PvE 9%, Futuristic 8%
This is a classic tower defense game. The alien ship is ready to invade this lovely planet. We need to use various weapons to prevent them from reaching the destination.
Why similar: Tower Defense 58.3%, Strategy 14%, Pixel Graphics 11.6%, 2D Platformer 9.5%, Survival 6.2%
A tower defense strategy science fiction game, in the future era, when aliens invade the solar system, players need to build various turrets to resist alien attacks and guard the Milky Way and solar system.
Why similar: Tower Defense 46.5%, Strategy 16.4%, Space 14.8%, Aliens 14.1%, Futuristic 7.8%
Defend the galaxy as a mystical gem civilization! Gemspire: Incremental Invasion blends tower defense with incremental mechanics. Build crystal towers, upgrade magical defenses, and repel endless waves of futuristic alien invaders in this fantasy 2D strategy game.
Why similar: Tower Defense 48.9%, Strategy 15.4%, Futuristic 12.6%, Combat 11.4%, PvE 5.7%
Year 2425, humanity colonized the exoplanet named SACH-041840. But then, in the 55th year "they" came; No one knows who or what controls them, but what is known is that if they reach the colony proper, it will be annihilated. It is up to you to bring the WRECKONING upon them!
Why similar: Tower Defense 34.8%, Space 13.9%, Aliens 11.4%, Strategy 9.7%, Futuristic 8.4%
Defense Grid: The Awakening is a unique spin on tower defense gameplay that will appeal to players of all skill levels. A horde of enemies is invading, and it's up to the player to stop them by strategically building fortification towers around their base.
Why similar: Tower Defense 77.7%, Strategy 11.2%, Aliens 6.8%, Futuristic 3.3%, Singleplayer 0.6%
Wave after wave of enemy shapes are looking to break through your defenses and ravage the land of Language. Build your defenses, all made of ASCII characters, to repel the invaders!
Why similar: Tower Defense 61.3%, Strategy 20%, PvE 11.6%, 2D 6.3%, Singleplayer 0.9%
Terra Forma is a pixelated 2D tower defense, inspired by Flash-age classics. Build a dozen unique towers and create even more fusions by combining shock, ice, fire, and iron. Prove your command prowess one final time, and defend mankind's final hope.
Why similar: Tower Defense 52%, Strategy 17.3%, Futuristic 10.1%, Aliens 8.1%, Pixel Graphics 6.2%
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 42.6%, Space 20.6%, Strategy 13.3%, Combat 9.8%, Survival 5.5%
Five-star tower defense with unrivaled depth and replayability. The Bloons are back in full HD glory and this time they mean business! Build awesome towers, choose your favorite upgrades, hire new Special Agents, and pop every last invading Bloon in the most popular tower defense series in history.
Why similar: Tower Defense 65.2%, Strategy 13.7%, Online Co-Op 12.6%, Co-op 3.3%, 2D 2%
The Rift is a tower defense game with elements of RPG gameplay that will appeal to players of all skill levels. Enemies from an alternate universe are attacking and it's up to the player to stop them by strategically building defensive towers.
Why similar: Tower Defense 44.3%, Strategy 15.4%, Aliens 14.1%, Adventure 8.5%, Futuristic 8.1%
SENTRY is an action-defense first person shooter where you defend your spaceship against invading aliens. Plot an escape route through hostile space and battle the enemy across your vessel with the support of traps, turrets and environmental destruction.
Why similar: Tower Defense 38%, Space 16.6%, Aliens 13.2%, Strategy 10.1%, Survival 9.2%
In this 2D platformer intergalactic rescuer should as fast as possible to pass through space ship of interplanetary scientists and collect ion-quantum batteries. Use a variety of game mechanics to complete the levels faster. This will be challenging.
Why similar: Runner 30.1%, Aliens 17%, Space 14.5%, 2D Platformer 14.3%, Futuristic 11%
Terrorhedron is the 3D, cooperative tower defense game for the PC. Unmatched challenge and complexity is introduced to the genre through 3 dimensional gameplay, micro-strategy through programmable turrets and 'edge of seat' gameplay is extended to multiplayer with up to 8 players online co-op.
Why similar: Tower Defense 76.5%, Strategy 12%, Online Co-Op 10.6%, Multiplayer 0.9%
Space Nature Attack TD is a tower defense where you can level up and customize tower stats and elements to your liking! Fend off various types of alien creatures across many different sci-fi planet themed maps, biomes, and difficulties!
Why similar: Tower Defense 50.5%, Strategy 17.9%, Space 15.8%, Aliens 15%, Singleplayer 0.8%
Anathyma is a Hero Tower Defense game where you command a powerful Hero and build and upgrade towers to fight back against increasingly powerful waves of enemies.
Why similar: Tower Defense 42.2%, Online Co-Op 24.4%, Strategy 10.4%, Pixel Graphics 6.2%, PvE 6%
The Bloons are back and better than ever! Get ready for a massive 3D tower defense game designed to give you hours and hours of the best strategy gaming available.
Why similar: Tower Defense 53.7%, Online Co-Op 23%, Strategy 12.2%, Survival 3%, Co-op 3%
"Einheriar" is a tower defense game that aims to prevent monster invasions. You must summon potential and talented warriors from the world to protect this land!
Why similar: Tower Defense 42.8%, Strategy 18.5%, 2D Platformer 14.5%, Pixel Graphics 11.4%, Combat 8.6%
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: Tower Defense 39.1%, Strategy 17.5%, Aliens 13.2%, Space 11.6%, Futuristic 8.8%
A tower defense action-roguelike with online co-op and single-player. Gather resources, build towers, upgrade your auto-attacks, and fend off waves of monsters.
Why similar: Tower Defense 37.8%, Online Co-Op 24.2%, Combat 10.2%, Strategy 9.7%, PvE 5.4%
A unique tower defense and RPG game, find new towers, build gold vaults, and defend against monsters. It will be hard to fight against the king monster, you may need to try different tactics.
Why similar: Tower Defense 63.3%, Strategy 14.8%, Survival 12.7%, 2D 7.9%, Singleplayer 1.3%
The ultimate mash-up of Real-time Strategy and Tower Defense!
Why similar: Tower Defense 70.6%, Strategy 14.3%, Aliens 7.8%, Pixel Graphics 4.5%, 2D 2.3%
Gemini is an action tower defense game, where your goal is to protect the crystal and stay alive.
Why similar: Tower Defense 44.7%, Combat 15.1%, Strategy 10.5%, Pixel Graphics 9.4%, PvE 7.3%
Find the best combinations of projectiles and components to create the ultimate weapon. Mutate and upgrade your components to create stronger weapons. Fight wave after wave of monsters to reach the top.
Why similar: Tower Defense 47.8%, Strategy 21%, Futuristic 11.9%, Combat 9.9%, PvE 4.9%
Super Sanctum TD is a retro-styled Tower Defense game that focuses on strategy, customization and replayability. Build advanced mazes and construct powerful towers to prevent alien hordes from reaching the Core!
Why similar: Tower Defense 51.3%, Aliens 15.9%, Futuristic 11.2%, Strategy 9%, Pixel Graphics 6.3%
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: Tower Defense 39.3%, Strategy 16.7%, Aliens 14.4%, Futuristic 9.3%, Combat 6.8%
Employ lethal turrets, traps, and gadgets to defend against an onslaught of evolving creeps! Step into a twisted, hyper 3D, mind bending realm. Upgrade and adapt your defenses. Become a master maze crafter. Collect bizarre artifacts. Rush creeps for lucrative rewards, and succumb to greed!
Why similar: Tower Defense 36.2%, Online Co-Op 19.5%, Aliens 12.6%, Strategy 8.7%, Futuristic 7.7%
A Third-Person Tower Defense game in which you are an Intern sucked through a portal who now must defend the objective from aliens.
Why similar: Tower Defense 38%, Space 18.5%, Aliens 15.1%, Combat 10.3%, Strategy 9.6%
A wild mix of action and classic Tower Defense formula. Plan your defenses and dive directly into battle.
Why similar: Tower Defense 64.7%, Strategy 15.4%, Combat 8.1%, Pixel Graphics 7.9%, 2D 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 48.3%, Combat 15%, Strategy 11%, Space 9.1%, Futuristic 8.1%
Starfall Defenders is a classic tower defense game that features unique towers and enemies. It also has an in-game shop system that allows players to purchase better towers, upgrade existing ones, and buy special items like the Atom Bomb, Splash Bomb, and Air Supply.
Why similar: Tower Defense 40.6%, Space 20.5%, Strategy 16%, Aliens 10.4%, Futuristic 7%
Tower defense, 24 characters, 50 + spells, challenge your level of operation and strategy.
Why similar: Tower Defense 46.8%, 2D Platformer 22.1%, Strategy 17.1%, PvE 9.3%, 2D 4.2%
Faith & Shield: 4044 Tower Defense game, where you protect the human settlement from the incoming invaders, robots and other creatures, never seen before on our planet.
Why similar: Tower Defense 45.5%, Aliens 20.3%, Futuristic 14%, Strategy 11.9%, 2D 3.9%
FPS Tower Defense where you fight hordes of blocks. Use differnet weapons, turrets and traps to build a strong defense and stop the enemy.
Why similar: Tower Defense 56.9%, Strategy 19.4%, Combat 12.2%, PvE 10.9%, Singleplayer 0.6%
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!
Why similar: Tower Defense 50.1%, Space 18.2%, Strategy 17.4%, 2D 5.4%, PvE 4.5%
Midnight Tower Defense is a roguelite tower defense strategy game, where you must fight endless waves of enemies either by hand with melee, or by purchasing towers and upgrades to fight from a distance. Every wave the can enemies grow stronger, with every 10 waves being a boss wave.
Why similar: Tower Defense 51.8%, Strategy 18%, Survival 10.3%, Pixel Graphics 6.7%, Combat 6%
Build an impossible tower. Defend it against endless sieges. Watch it crumble — and rebuild stronger.
Why similar: Tower Defense 52%, Strategy 18.8%, Combat 17.4%, Pixel Graphics 6.5%, 2D 4.8%
Beware Planet Earth! is a beguiling mix of classic tower defense and time management coming to PC via Steam for the first time. Save your cows from the Martian invasion by building an effective defense using towers, traps and objects, and also by firing your Zapper directly at the invading force of little green men!
Why similar: Tower Defense 57.4%, Aliens 17%, Strategy 11.1%, Space 7.8%, 2D 4%
Several realms being attacked by monsters, and you don't know what to do, just fight
Why similar: Tower Defense 58.8%, Strategy 19.6%, 2D Platformer 15.8%, 2D 5.2%, Singleplayer 0.6%
”Sacular Defense" is a real-time tower defense game in which you intercept enemies by placing circles around them to prevent them from hitting the planet in the center of the screen. Strengthen your turrets and defend your planet from the endless enemies!
Why similar: Tower Defense 48.5%, Strategy 15.3%, Space 12.8%, Adventure 9.7%, Futuristic 7.3%
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 43.9%, Space 19.8%, Aliens 15.7%, Strategy 11%, Combat 9.1%
You think Tower Defense games are all about building? You thought wrong. Sanctum is not your average Tower Defense title. When the havoc starts, you get to join the fray! As one of the world’s first First Person Shooter - Tower Defense games, Sanctum has taken the best of both worlds to deliver an epic, one-of-a-kind experience.
Why similar: Tower Defense 68.8%, Online Co-Op 12.2%, Strategy 10.5%, Co-op 3.2%, Futuristic 2.3%