It is recommended to click on source code (To prevent fail from button(s)) Let's start by pressing the green flag, there are 5 buttons to choose. Start with pizza. After you click this one, you need to wait patiently. To upgrade. You ned cash to do this. After that you can carry on to the next button. The 'home' button is to see the achievements. Lost your data? No problem! There is a save button on the bottom right corner. After that there is a number code here. Copy and paste into your notepad and continue play later. Load: Still the bottom right corner, you need to paste the code.