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.

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.

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?

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

Pick cards, equip stones, chain color synergies — and survive endless meteor waves. A 3D sci-fi tower defense roguelite where every run builds different and hits harder.

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.

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.

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.

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!

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?

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.

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

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.

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!

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.

A strategic and action-packed base survival game where you mine crystals, build units, and defend your base against waves of UFOs. Defeat enemies, gather resources, and unlock new planets to expand your defenses. Are you ready to conquer the galaxy?

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

MILLIONS OF ALIENS WILL DIE!Radiant Defense is a tower defense game set in a vibrant universe invaded by countless alien hordes.Build your space fortress any way you wish, set up wide variety of weapons and traps and let the invasions begin!

Demolish streams of antroids and advance the progress of science in the process! A pixel futurism tower defense game with rogue-lite elements, where you build turret robots (“Turbotz”) to annihilate research fodder. Upgrade both sides and push explosive research to its limits!

An arcade strategy game about defending your garden. Grow potatoes, onions and carrots to defend your lawn!

Refactor is a hard-core tower defense game that combines modular building, route planning, and element composition.

Conjure towers and cast spells to slay hordes of enemies attempting to destroy your lone bastion

Last Star is a space shooter roguelite with tower defense elements. Pilot a spaceship to protect your solar core from endless waves of alien invaders. Upgrade both your core and spaceship to become unstoppable. Execute tactical counterattacks against alien motherships to slow down the invasion.

Melt them All is action rogue-lite where you must survive as long as possible to maximizing your energy production in the process. Automate the resource collection and upgrade buildings and weapons to kill, mine and produce even more effective.

Build, gamble, and most of all survive in this roguelike tower defense where everything is a tile. Use the slot shop to draft towers and physical upgrade tiles to buff your grid. With hundreds of unique synergies, will you hit the jackpot or let the enemies break your base? Play the odds today!

Build & defend a small remote mining base on Taichin XI from the alien hordes. Deploy defenses, upgrade your turrets and get ready for the nightfall. The Unearthened is a classic Idle Tower Defense game where you build towers and prepare for the invasion.