Start by clicking the green flag and then see how much it is to get your first upgrade and then your can upgrade as much as you want!Warning, if you are in the middle of the game do not click the green flag or you will restart.And there is now a secret thing when you reach a very high amount of donuts.
Thank prithvibirdy for asking to put this update you shuld check out his scratch games.And thank you to thegodofscrach.
