Create chains, create Monster Chains and go for highscores!
Instructions: Press and hold the left mouse button and move over at least 2 monsters of the same kind horizontally or vertically to remove them. Create closed/Monster Chains for best points!

IMPORTANT rule: To achieve the best points try to be creating mainly "Monster Chains" - to create Monster Chain you must connect the last monster with the first monster in your chain. With Monster Chains you can achieve XX more points than with normal (not closed) chains.