Byte Burger Rush is a free browser game that teaches how real-world payments work. Run the burger counter during the lunch rush: accept card and cash payments, watch interchange fees flow through the four-party model (Visa, Mastercard, Amex), experience T+2 settlement as your revenue slowly lands in your bank account, deal with online orders that bring CNP fraud and chargebacks, process ACH payroll on payday, and send a same-day wire when a supplier demands it. Every mechanic maps to a concept from the real payments industry.