Best Alien Defense Apps &amp; Games

4.7😊(14K ratings)

FreeAdsIn-App Purchases

Engage in fast-paced tower defense battles against alien invaders. Deploy a variety of towers, heroes, and infantry to defend Earth. Upgrade your defenses and strategize to overcome hordes of enemies across numerous levels and challenges.

What We Love

👍 Addictive gameplay
🚀 Engaging tower defense mechanics
💡 Unique hero system
👍 Offline playability

Room to Improve

💰 Expensive in-app purchases for heroes
🔒 Limited free progression without spending money
🐛 Bugs and crashes reported
🔋 Excessive advertisements

TowerMadness Zero by ZSpectre, Inc.

Classic Defense Strategy

Strong Contender

4.6😊(944 ratings)

FreeIn-App Purchases

Defend your sheep from alien invaders in this classic 3D tower defense strategy game. Deploy a variety of upgradeable weapons and think fast to survive over 100 maps and endless waves of enemies. Compete with friends on global leaderboards.

What We Love

🚀 Streamlined TD gameplay
👍 Cute character animations
👍 Simple but not too easy
👍 Engaging strategy
👍 Challenging levels
👍 Nostalgic and classic
👍 Addictive and fun

Room to Improve

🐛 Crashes and compatibility issues
🔍 Too many ads, disruptive to gameplay
🔍 Resistance system imbalanced

Alien Defense - Save Area51 by GOODROID,Inc.

Area Tower Deffense

Worth Considering

Tower Madness 2: #1 in Great Strategy TD Games

2.9(13 ratings)

FreeAdsIn-App Purchases

Alien Defense - Save Area51 screenshot 1

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Lead special forces against alien invaders in this strategy game. Command your troops to defend Area 51 and achieve victory against extraterrestrial hordes. Your strategic decisions are crucial for survival.

More Alien Defense apps to explore

by ZSpectre, Inc.

70 exciting maps across 7 campaignsUpdated and new weapon arsenal16 different alien enemies and bosses

Defend your flock from an alien invasion in this strategic tower defense game. Deploy a variety of updated and new weapons across numerous maps and campaigns. Utilize unique character abilities and optional in-app purchases to overcome challenging enemies and bosses.

(10K)

Galaxy Defense: Fortress TD

Defend Planet, Beat Aliens!

Build diverse turrets with unique skillsStrategize turret assembly based on enemy attributesPower up character with chips and weapons

Defend Earth from alien invaders in this idle tower defense game. Build diverse turrets, strategize your defense, and power up your character with unique skills and weapons. Collect resources and take on global challenges to protect the planet.

(9K)

Action Tower Defense Shooter

Swamp Attack

Defend your porch from mutant creaturesOver 540 single-player levels35+ insane defense tools

Defend your porch from waves of mutant creatures, aliens, and zombies using an arsenal of weapons and strategic upgrades. Survive over 540 levels across 11 episodes with intuitive tap and drag controls, even offline.

(35K)

CrazyGames: Play 1500+ Games

Casual, Puzzle, Action & IO

Instant game play, no installsOver 1500 games in one appWide variety of genres

Access a vast library of over 1500 games instantly without any downloads or installations. Enjoy a wide variety of genres, from casual puzzles to action-packed multiplayer battles, all within a single, lightweight application.

(23K)

MILLIONS OF ALIENS WILL DIE

Radiant Defense

Build custom enemy pathsOver 300 alien waves9 upgradable weapons

Defend your space fortress against alien invasions in this vibrant defense game. Strategically build your base, deploy a variety of weapons and traps, and customize enemy paths to survive hundreds of waves. Compete for high scores in an online hall of fame.

(144)

Alien Invasion: RPG Idle Space

Spider evolution venom games!

Evolve alien for new abilitiesCrush humans and challenge bossesUpgrade capacity, speed, and radius

Command an alien and grow its army by defeating humans in this idle RPG. Evolve your alien with new abilities, upgrade its stats, and face challenging boss battles to achieve extraterrestrial dominance.

(128K)

Aliens Defense

Stop the Alien Invaders.

Alien invasion defenseStrategic placement of defensesWave-based gameplay

Defend against waves of alien invaders in this engaging defense game. Strategically place your defenses to repel the extraterrestrial threat and protect your territory. Experience a straightforward yet challenging gameplay loop designed to test your tactical skills.

Dumb Ways to Die 2: The Games

(2)

free

Supercharged mini-games!

Supercharged mini-gamesAll new levels and challengesLeaderboards

Engage in a collection of supercharged mini-games with new levels, challenges, and characters. This sequel offers a fun and cheeky way to promote train safety.

(24K)

Hero Defense - Alien Creeps

Strategic defense deploymentSuperpowered hero abilitiesAdvanced weaponry and tanks

Defend your city from an alien invasion by strategically deploying advanced weaponry and powerful heroes. Command the last line of defense to thwart enemy attacks and prevent occupation.

(3)

Tower Defense - Alien Attack

Strategy War Game TD

Strategic tower placementTower upgrades up to 3 levelsFace diverse alien species

Defend your base from an alien invasion by strategically placing and upgrading towers. Utilize power-ups and adapt your tactics to overcome waves of unique alien creatures across hundreds of challenging levels.

(1)

Sci-Fi Space Defense : Alien war game

by Amr Samir

30 challenging levelsTower building and upgradesPower-up usage

Engage in a futuristic tower defense experience with over 30 levels of intense alien warfare. Build and upgrade defensive towers, utilize power-ups, and strategize to protect your base from relentless waves of enemy spaceships. Compete with others through leaderboards and achievements.

(21)

No WiFi Games - Offline Games

Fun Games to Play When Bored

Diverse game selection100% offline playRegular game updates

Discover a vast collection of engaging games playable entirely offline. Enjoy puzzles, strategy, word games, and more without needing an internet connection. Save progress, track scores, and unlock achievements in a user-friendly interface.

(6.4K)

지구방위본부(Guardians of the Earth)

Alien Roguelike Defense

Classic tower defense gameplayRoguelike card system for upgradesFuturistic weapon deployment

Defend Earth from alien invaders in this tower defense game with a roguelike card system. Build and upgrade futuristic weapons, adapt your strategy with unique card choices, and face waves of diverse enemies and bosses. Every playthrough offers a new, unpredictable challenge.

Commander Aliens Are Incoming!