Your invisible kitten, 'Secret', is hungry and you must defrost and feed to her as many fish as you can. If your ice box overflows Secret will get angry and run away.
Connect five or more fish and they will be fed to Secret and removed from the board.
Complete a row of ice blocks and they will crack open revealing any fish that are contained within.
Swipe left and right to move your falling blocks, and swipe down to add it to the box faster. You can rotate the blocks with the on screen buttons.
Try to keep Secret fed and happy for as long as you can. She is hungry. Please feed her.