Zyconix

Zyconix is an arcade puzzle game.

Colored blocks raining down on a playfield, we've seen that before. Zyconix takes the Columns principle (align three or more bricks of the same color to make them disappear) and adds a few twists of its own:

First, there are no groups or columns of stones, only single blocks.
Second, several of them slide down at once, and you select and move them with a cursor.
Third, only horizontal and diagonal lines disappear, but not stacks of the same color.