Unlock Special Item Functions
In order to unlock the Special Item Functions in the New Age version you must first accumulate a certain amount of points in the Classic Version
UnlockableHow to unlockBarrier Employs a shield to protect your cannon s from attack20000 PointsLaser Lets you fire a penetration laser from your cannons15000 PointsRapid Gives your cannons rapidfire capabilities5000 PointsSpeed Up Increases the speed at which your cannons fire2000 PointsStop Temporarily freezes the invaders30000 PointsSupport Support cannons appear and shoot together with your main cannon10000 Points