Check it out:
This game is a work in progress and may not be representative of the release version.
* Horizontal, vertical, and diagonal lines connect circles of the same color.
* A move is made by selecting a column. Any color match with at least one of its two circles in that column will have them shrunk.
* Roughly, circles in between will change to that color and gaps in between will create circles of that color.
* When a stack of circles lands, it will be automatically selected with behavior as above.