Raid into alien force positions to eliminate the threat for your home!
Free Download Alien Sky (6.38 Mb)
Buy full version of Alien Sky ($19.95 USD)
Or you can have downloaded and installed Alien Sky game before purchasing.
Purchasing the full version has never been easier.
Using the Quick Pay feature, your free demo version can be instantly upgraded with a credit card.
This will immediately open the full version and does not require an additional download! | 
