Nexon Game Card gets your cash online so you can buy what you want, when you want, without having to use a credit card. Just by buying the things you want, you can help create positive change. Karma Koin was rebranded to Nexon Game Card. Aside from this name change everything else works exactly the same for both cards. Any reference to Nexon Game Card applies to Karma Koin cards, including checking your card balance, combining card balances, and additional support, like PIN assistance and redemption issues.