Why do you just not buy a prepaid credit card/PayPal card/paysafe credit card or just make a revolut acount... I mean you don't want to solve the problem if you're not looking for the possibilities you have. It takes 5 minutes to make those and you can just destroy them after, plus they have the advantage that they are anonymous so you don't need personnal infos.... (You may just search about online credit cards too) and if that is not a possibility you still have the prepaid eshop cards available at every store/gas station.... Buying the game is not the problem anymore