How much money can you make before running out of lemonade? After clicking the green flag: 1. Immediately click the sugar to buy sugar and the lemon to buy a lemon. Then click the cup to create a cup of lemonade. 2. Soon the customer will ask for lemonade. If you have one or more cups made, he'll pay you $1 for a cup. If you don't have them, the game is over. 3. Keep buying sugar and lemons and making lemonade so that there will always be cups for the customer. Try not to run out of money, though!