The download button opens the iTunes App Store, where you
may continue the download process. You must have iTunes installed with an
active iTunes account in order to download and install the software. This
download may not be available in some countries.
From TMHR Consulting:
Crytons alien starships are invading from another galaxy trying to steal your planet for its resources. Destroy the galactic spaceships and protect your planet by shooting down their spaceships and taking back the planet that are your right and for the taking.Use coins earned by collecting them during your travels through the rogue traffic and to upgrade to a more powerful spacecraft and attack the enemy fighters. Watch out for the spaceships and space traffic coming from any directions before it takes your Space Shooter out.