How long can you hold out against an endless horde of aliens?

Defend your base, upgrade your weapons and call in turrets and barricades.

Welcome to Alien Defense and thank you for playing.


This is a simple one click / touch game.


Click the ‘lane’ you’d like your marine to defend. 


You can save and exit from the pause menu in game.


Falling turrets and barricades squish aliens so use them to your advantage!


Any comments, please let me know.

OpenStorm Games
Privacy Overview

This website uses cookies so that we can provide you with the best user experience possible. Cookie information is stored in your browser and performs functions such as recognising you when you return to our website and helping our team to understand which sections of the website you find most interesting and useful.