Clear the game field from all blobs in as few moves as possible. Gaining the maximum score is encouraged by global rating system.
The smallest orange blob grows into a pink one, which grows into a green one, then into blue one, which bursts into four tiny pieces. These very pieces stimulate the growth of adjacent blobs.
Endless number of levels, which vary only in initial layout of the blobs on the field. No time limit, only the number of moves is limited. However, if single move bursts two blue blobs, the number of available moves is increased by one.
A relaxing music distracts from the noise of the outside world.