On some Plättchen there are items. When the Plättchen gets destroyed, the item is activated as soon as all Plättchen stand still.

Horizontal Beam  

Destroy a large number of Plättchen, including black and white ones, and yield their energy.
Vertical Beam
Cross Beam
Square Beam
Multiplier  

Doubles the energy of the explosion. More multipliers add up and yield even more energy.
Color Killer   Destroys all Plättchen of a color.
Spike Ball  

Creates a square of white Plättchen with black Plättchen in the center.