Fair when you knowing you pushed end those bothersome invaders in the 1980's, a current scan has found them difficult to establish a lunar foothold for their immediately attack.

Fortunately, World was capable to install a missle defence whole on the external before they could beginning landing.

Mastery the weapon Defender and sound the Planet Intruders, and prevent them from reaching the external!

- Added the adeptness to coins the essential chart (for Zire 21 and Zire 31 users).