Klicktris is a game of combination - it requires logic and clever thinking.
The playboard is made of colored blocks, the goal is to remove them.
Blocks that share at least one border with another block of matching color can be removed by double tapping. If done correctly, clearing all blocks is possible.
Sometimes you can create new possibilities by rotating your device as the blocks will always move towards the bottom of your screen.
Klicktris is also available for MacOSX, Windows and Linux - for free!