Mega alien siege: Turret base

Contains adsIn-app purchases
4.3
471 reviews
50K+
Downloads
Content rating
Everyone 10+
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image

About this game

Join the epic battle in "Mega Alien Siege: Turret Base," where you become the last bastion of humanity in a world ravaged by war. Protect your base from an alien invasion by managing powerful defensive turrets and combat robots. Strategically place them across the battlefield to effectively handle the waves of relentless attacks.

Your mission is critical: to protect and preserve. Enhance your arsenal and create powerful defensive fortifications capable of stopping any enemy. Each decision you make can impact the outcome of the battle as you fight off the waves of attacking enemies in this intense tower defense game. Deploy combat robots, each with unique features, to strengthen your defense.

Show your tactical prowess by managing resources and distributing defensive forces across the entire game space. With each successful attack, expand your influence and capture new territories, strengthening your position in this ruthless world.

Immerse yourself in a captivating story unfolding in a world forgotten by military conflicts. Unlock new campaign chapters and lead your troops in critical situations where every strategic decision matters. Use unique skills and technologies to maximize the effectiveness of your defense and offense.

Mega Alien Siege: Turret Base is the pinnacle of strategic depth and visual mastery inspired by pixel art. Prepare for the ultimate siege confrontation, where every action and strategic decision you make could be decisive in the battle for humanity's future. Control combat robots and powerful skills to protect your base and preserve the hope of humanity.
Updated on
Nov 5, 2025

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
Learn more about how developers declare sharing
This app may collect these data types
Location, Personal info and 3 others
Data is encrypted in transit
Data can’t be deleted

Ratings and reviews

4.2
434 reviews
Dalton Shatswell
December 3, 2025
the game is alright but the way they shove ads down your throat is crazy. everytime you get a reward or get gems, they ask if you want to watch an ad to double it. after 2 rounds or sometimes even after only 1 round they force you to watch one of those stupid short double ads. when you upgrade your main weapon, it only improves the damage, it doesnt improve the aim at all.
1 person found this review helpful
Did you find this helpful?
Alance Jensen
January 7, 2026
Mega Alien Siege is awesome! This app has arcade game feel. My fingers love to tap the game. The other TD games don't immerse as well as MAS... You can deploy units, call for air strikes and aim command center weapons at incoming waves of baddies, & it's basically free. The other apps are far behind, this app is solid! 5stars!
Did you find this helpful?
Daisy Talania
November 21, 2025
This game was so much fun to be honest, it's kinda hard to understand at first but when you play long enough you'll soon understand the game, I want to add some features in to this game like Online Multiplayer and World Boss. Can you add that please?
6 people found this review helpful
Did you find this helpful?