The objective of the game is to remove groups of colored ooze before it reaches the top. You can remove the ooze by clicking groups which contains 3 or more blobs of the same color. If you play mean mode and remove more than 5 oozes at the same time a black colored ooze will slowly rise in the time meter to the right. You can send it to an opponent by clicking their gameboard or by clicking F1 - F4 or F5 to send it to the player with the highest score.