Petri is an innovative, action-puzzle for your iPhone or iPod Touch.

Description

The colors on the screen keep moving and changing.  On the bottom right hand corner, there is a color written.  You want to make the screen become completely that one color.  You can do this by 1) erasing the colors by dragging your finger across the screen or 2) by double-tapping the screen to change the colors.

Strategy

The colors are not random.  They move according to certain patterns.  Red will attack green.  Green will attack blue.  Blue will attack red.  So your strategy should take these patterns into account.  For example, if you want to make the screen red, it might be a good idea to erase all of the blue first.

But your strategy might change as the levels get faster and more difficult.  Every level is unique.