Yes indeed, I intended to make a different Zuma game.I considered to substract score when you discard an animal.But after some friends of mine tested it they both thought this game is a little difficult. Losing score for discarding animals will make the game more difficult so I decided to give up this idea.I'll reconsider it if I have the chance to polish it better in the future.Thank you for your advice and thank you for playing!
Sorry I missed your point cause I'm not a native English speaker :(
The reason you lost your score is when the animals finish one circle you will be punished by losing 3 point.So you have to balance the weight of animals to control the rotation speed meanwhile you have to get score by making animal fall from the circle .You can find the rule in "How to play" page but I did not make it clear in game.It was my fault.