A game that I used to play a lot during elementary school is Lemonade Stand. You operate a lemonade stand and aim to make as much money as you can in a set period of time. You buy inventory, set your recipe based on environmental conditions, and set your price. This game’s main interaction loop revolves around a single day, during which you adjust recipe and price based on what you observe from customers. At the end of each day, there is a report (number of sales, number of customers, customer satisfaction, popularity), which serves as feedback for you to take to the following days. You repeat this same interaction loop until the time period ends. The arc of the game follows this development, as you continue adjusting and improving your lemonade stand’s operations until the end of the time period, trying to accumulate as much profit as you can.