This is a bubble shooting game, but without the shooting!
Place the current bubble into just the space you want. Match three or more to remove a group of bubbles. More bubbles will be added to the top of board when the count runs out (or when a color is eliminated if "extinction fill" is on).
Your goal is to remove all the bubbles before they reach the bottom of the board - or maybe it isnt. You might decide your goal is to eliminate the largest group possible, or to remove the obstacles, or to get rid of as many red bubbles as you can before removing any green bubbles.
Cheating is allowed. If the count has run out, but theres still a move you want to make, go ahead and make it.
The game includes a number of user definable options including board size, number of colors, countdown length ("duds"), and non-matchable obstacles.