Car manufacturers are legally required to provide spare parts for about 7 years after sale. That's part of why discontinued car models are destroyed instead of

Car manufacturers are legally required to provide spare parts for about 7 years after sale. That's part of why discontinued car models are destroyed instead of sold at clearance discount. And parts can be reverse-engineered/cloned too (as long as they aren't software-locked). Zynga could offer to it's user to give their users credits to use in an alternate game, if they want.