here is some tips : when you get a shield try to destroy a many mine as possible thhis give you a lot of points and when you get the destruct bubble try to whait to mines has collect as many as possible then use it "BTW : game is good 5/5"
one time i have spot four differencs but i can find the last one so i see a little dot so i click em click em but nothing hapends then i figured out is a is a little dot on my LCD