ROTATE the blocks to make coloured diamond shapes at the centre of four white dots.
Tapping on any white dot will Rotate that block in a clockwise direction, each time you make a same coloured diamond, those four blocks blow away and are replaced from  the ones above, adding 100 to your score.
Each block has four coloured corners, Red  Blue Yellow and Green, and also has a lighter and darker inner or outer set of colours, when playing you can SWAP these by tapping on the word Action at the top left.
You can Rotate as many times as you wish. But you only have 25 Swaps to use.