Best Alien Defense Apps & Games

Tower Madness 2: #1 in Great Strategy TD Games

by ZSpectre, Inc.

Free

Protect your base from hordes of alien creatures by strategically placing defense towers along their path. Upgrade your towers, unlock new weapons, and unleash powerful attacks to fend off the invaders in this action-packed tower defense game. Ready to defend against the alien onslaught and save the planet?

Radiant Defense

MILLIONS OF ALIENS WILL DIE

Free

In a vibrant universe overrun by alien hordes, Radiant Defense lets you build your space fortress, customize weapons and traps, and defend against waves of enemies. With over 300 waves in 14 missions, 9 upgradable weapons, and online rankings, strategically protect your territory in this intense defense game. Join the battle now!

Alien Invasion: RPG Idle Space

Spider evolution alien games!

Free

In this RPG idle game, command an alien to defeat, evolve, and dominate by eating humans to grow its army. Face powerful bosses, evolve your alien, crush waves of enemies, and upgrade abilities to dominate in epic battles and unlock new locations. Download now to assert extraterrestrial dominance!

Idle Zombies

Fight against the Zombie Horde

Free

In this heart-pounding zombie defense game, fight off hordes of zombies and legendary bosses using a variety of weapons and special abilities. Can you defend the cities and become the ultimate zombie slayer? Test your skills now and start your mission to save mankind! For feedback and support, visit the developer's website. "Fight against the Zombie Horde and become the ultimate zombie slayer! Test your skills in this adrenaline-filled defense game. Start defending now! Visit the developer's website for more."

Galaxy Defense: Fortress TD

Defend Planet, Beat Aliens!

Free

In this thrilling tower defense game, you are the commander of a fortress tasked with defending Earth from alien invaders. Strategically build and upgrade a variety of turrets, equip your character with powerful weapons, and team up with global players to resist the alien attacks and protect our planet.

Swamp Attack

Defend. Survive. Attack!

Free

Defend your swamp against invading monsters using a variety of weapons like dynamite and flamethrowers! Strategize, shoot, and survive in this action-packed tower defense game. Download now to beat the monsters and protect your home!

Galaxy Attack: Alien Shooter

Classic Space War Invasion

Free

Protect Earth from alien swarms in a challenging space shooting game. Upgrade your spacecraft, face enemies in various environments, and engage in multiplayer mode. Download now for classic space combat!

Zombie Idle Defense

Idle and vs. zombie game

Free

Experience thrilling gameplay in a post-apocalyptic world overrun by zombies. Defend against endless waves of enemies, strategically choosing weapons and upgrading skills to become the ultimate zombie killer. Take on the challenge now!

Ancient Planet Tower Defense

They're coming right for you!

Free

Engage in classic Tower Defense gameplay with 40 unique levels and diverse enemies in this offline, ad-free strategy game. Upgrade towers and create unique strategies to defend against alien raiders without the need for an internet connection. Don't forget to leave a review and enjoy the game without interruptions!

Space War TD

by POLYCUBE Inc.

Free

Embark on a mission to save Earth by driving out cube-seeking aliens in a thrilling tower defense game. Upgrade weapons, fortify your bunker, and compete globally for the top spot in this addictive space war experience.

TowerMadness

Classic Defense Strategy

$2.99

Defend your flock from evil aliens using a variety of weapons and strategic thinking in a unique 3D tower defense experience with over 100 maps and 60 weapons. Compete on global leaderboards and challenge friends for endless fun!

Sky Defense: War Duty

Epic aircraft attacking game

Free

Experience fast-paced, vertical arcade shooting in a thrilling alien invasion defense game. Defend your airspace with realistic visuals, intense battles, and simple controls. Download now and become the hero in SkyDefense!

Star Farm: Merge Tower Defense

Epic Alien FPS Shooting Games

Free

In a distant future where humanity's survival is at stake, defend your alien farm against relentless waves of giant alien bugs in this Merge Tower Defense game. Merge different towers to enhance their power, engage in epic battles against hordes of enemies, and strategically use a variety of defense tools to repel the alien invasion. Experience the thrill of first-person shooting and strategic gameplay to save humanity from the alien threat!

Sci-Fi Space Defense : Alien war game

by Amr Samir

Free

Get ready to defend your base against legions of space ships in an action-packed strategy game with futuristic graphics. Build and upgrade towers, use power-ups, and stay alive as long as possible in this challenging tower defense game with 30 levels and two game modes.

Sandship: Crafting Factory

Control an alien factory!

Free

Control a massive, artificially intelligent mega-factory in a post-apocalyptic sci-fi universe. Design and manage intricate production lines, trade goods, unlock ancient technologies, and explore a mysterious alien desert with robots and aliens. Join the adventure now!