It took me some time to understand the main gameplay of this game, basically it uses teris as a card to match the shape showed on the screen, and the faster the better, also keep in mind you need to meet the special demand of the customer to have specific terris.
However, I have some serious problem with the drag function , I always get the card on screen dragged instead of the cards on the bottom. I was quite upset by the bug and I am not sure if it is a problem of my device compitability, so I did not continue the gameplay further.