Match 3 of the same images on the grid. Click on the two images to make a swap. If the water level reaches bottom then game is over. Top up the water level with the bonus water fill. For every match you find, water level is increased by a little.
Try and beat your own high score then click on save score to upload to mochi. click on the image and the image to swap. up, down, left, right only. swap has to be a 3 or more match.