This is a logical game in which you are fighting a clever opponent - a happy bubble.
Your goal is to close the chain of clouds around the bubble.
The goal of the bubble is to escape from the playing field.
You alternately make moves:
The first move is made by the player: You put the three clouds in any free cells.
In response, the happy bubble moves to one of the neighboring cells.
All next moves: You add one cloud, and the bubble moves to one of the neighboring cells.
Your goal is to cut off all possible exits.
Catch the happy bubble!