Top similar games like AGE OF ALIENS:

Build towers and learn abilities to defend against swarms of hundreds of on-screen hostile alien creatures. Choose between sets of randomized upgrades that both upgrade you and the alien swarm. From enormous explosions to far-reaching flamethrowers, no two games are the same.

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.

Defend your AI capital against endless alien invasions in this space shmup-inspired tower defense with roguelite randomness. Dissect bodies and ships to unlock weirdly powerful tech. Upgrade your base with turrets, turning your screen into a symphony of perfect destruction!

A base builder shoot'em up in Deep Space. Explore the galaxy aboard your B-Type Star Ship. Shoot down your foes to expand your territory. Build planetary facilities, collect resources and raise an Intergalactic Defense Force. Can you save the world from a robotic alien invasion across dimensions?

A rogue-like sci-fi Tower Defense strategy game with infinite replayability!

The Last Drop is a pixel art top-down shooter where you control the last water droplet on Earth. Battle waves of enemies with unique weapons, customize the map, and compete on the online leaderboard.

Heart of Machine blends top-down tower defense with light roguelite elements. Face an evolving mechanical swarm thousands strong, tailor defenses, upgrade towers with chips, and use real-time support weapons to turn the tide. Build an unbreakable line and save the core from destruction.

Grey Galactic is a real time strategy game in space where you build up your planets and ships to conquer your enemies. Develop your empire and fleet of spaceships to destroy your enemies and take over the galaxy! Do you have what it takes to become the best Fleet Captain the UFMC has ever seen?

Defend against the ongoing lizard problem in this dynamic tower defense where procedural, level-deforming earthquakes expand the available play area each wave. React to nature's forces and adapt to the changing terrain in order to survive.

A planetary tower defense where enemies attack across land, air, and space. Build layered defenses, manage resources, and survive an escalating alien invasion.

Keyclash is a simple tower defense roguelike about building on keyboard keys and surviving as long as possible.

Cosmic Stronghold is a mix of the genres RTS and Tower Defense. Your primary goal is to keep your space station alive for as long as possible, so that it can harvest the nearby mines for precious mineral ores. You will be faced with waves of enemies, getting stronger and stronger for each wave.

A procedurally generated sandbox survival game with RTS elements.

Tower defense meets Pac-Man-like in this addictive and unique strategy game. Play as Grandma as she outwits waves of demons across 40 challenging levels. Build mazes that send demons to their doom. Spend countless hours on one of the best strategy games available.

Apocalypseed is a 2D real-time strategy game where you are the invasion. Devour humans to harvest flesh, build and strengthen an army of alien plants, and evolve your creatures into new forms with unique abilities. Crush the human resistance as it deploys increasingly dangerous threats to stop you.

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.

Prepare for an epic battle in this captivating tower defense game! Build, defend, and triumph as you strategically place towers, manage resources, and upgrade your arsenal to fend off relentless waves of enemies.

Defend your planet from waves of robot invaders! Build powerful turrets, upgrade your defenses, and command robot units to fight drones, tanks, and massive bosses. Then send your own forces to attack the enemy planet in this action-packed sci-fi tower defense game.

You are in command of the human fleet, searching for asteroids to mine, extract resources and build bases and more ships to defeat aliens invaders. This simple and short action RTS has a full and exciting campaign, and a skirmish mode that allows you to play a different mission on every match.

Loop Defense is a single-player sci-fi tower defense game. Build enemy routes with base walls, assemble a modular defense, manage limited loadouts, energy, and research, face armored, flying, carrier, and wall-breaker units across a star map, or challenge Endless Mode.

Defend the energy cores from ever increasing enemy waves by destroying their spawn gates. Build tower mazes on Hex grid. Adapt them to dynamic changes in the terrain. Face quirky bosses. Design your own levels and share them on the Steam Workshop.

POINT CLOUDS HAVE INVADED YOUR FAVORITE PIXEL ART APP. Up to 1,000,000,000,000 dots flow like a fluid, hunt your core and chew through everything you paint. Your only power: the pencil. Draw walls, survive the siege, unlock broken builds. BUILD. RESIST. OVERFLOW.

Plant towers, hold the Nexus. A pixel-art tower defense where population caps how wide you can build, gold and mana decide what you build with. Draft augments as you level, spend gems on a permanent power-up tree, and find out how long your walls hold.

You’re being Bounty-Hunted! Run, Build your ship piece-by-piece and make it work with the parts you find, Destroy outposts and waves of fleets, and Pick your battles carefully to overcome your hunters in this Fast-Paced Top-Down Action Roguelite Shooter.

Prepare for the onslaught! Chromatrix is a retro tower defense game where color and placement are everything. Upgrade and customize your turrets to counter shifting enemy-types and map configurations. Manage your resources and craft the perfect defense against any attack!

Obsessively mine every tile of an ancient megastructure. Cash in your haul for upgrades and parts. Build the ultimate mining rig. Don't stop until it's all gone.

Cyber Tower 2048 is an action tower defense game where players fight insectoids by building defenses and developing tactics.

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!

An active skill-based siege defense game. Prepare your aim and quickly assess the coming onslaught. Survive a large-scale assault on your home as you build outward to strengthen your arsenal. Engage epic hordes. Encircle powerful upgrade runes. Enhance your weapons. Siege the day.

Little Kingdom RTS is an indie real-time strategy game set in a medieval fantasy world. Gather resources, build settlements, raise walls, and grow your small kingdom. Command an army of knights, archers, and mages to fight off rival kingdoms, orcs, and undead.

Astra Sentinel is a wave-based survival RTS where endless alien hordes relentlessly assault your planets. Build defenses, colonize planets and manage resources under constant pressure. Will you be able to recover the control of the galaxy?

Defend against waves of invading balloons in this colorful tower defense adventure. Place and upgrade 8 unique towers, including fire, slow, explosive, and sniper types, across 20 challenging levels. Mix strategies, complete goals, and try to beat the developer’s high score!

Atmospheric unique minimalist tower base defense game. Highly addictive.

Command heroic rescue dogs in a colorful tower defense battle against alien invaders. Build, upgrade, unlock heroes, defend strange battlefields, and survive wave after wave in RDVA-TD: Rescue Dogs vs Aliens.

It’s a defense game where you create your own strategy, grow your units, and defend against enemies.

Build and upgrade a modular warship in this single-player roguelite. Command real-time battles, slow time to use abilities, and intercept incoming missiles. Unlock new starting ships and equipment between runs, and shape your crew's story through your choices.