This game series will help you identify and understand business transactions using a discount, interest, taxes, and currency conversions. The mini-game 1, "Choose and join", explores the concept of the exchange rate. By playing this game you will be able to count notes and coins to make an amount and convert that amount into a different currency. To deepen your knowledge about the exchange rate concept, the mini-game 2, "Let's exchange", explores the concept again, so you can learn how to apply currency exchange rates for an available budget. The mini-game 3, "Score a goal", introduces you to the concept of Trade discount. The completion of this game allows you to identify the notion of discount and understand how to proceed to complete a transaction. Following this, the mini-game 4, "Play with interests", provides you with a deeper understanding of the concept of interest rate. By playing this game you will be able to identify the notion of the interest rate when you buy a product or a service and will know how to proceed with a transaction. The last game of this series, the mini-game 5, "Find the way out", promotes the understanding of the Value Added Tax (VAT) concept. Upon completion of the mini-game, you will be able to identify the notion of Value Added Tax in a business transaction.