Nintendo has announced that the Wii U eShop and Nintendo 3DS eShop will no longer allow owners to add funds with a credit card as of January 18, 2022, for the Japan region at least. This does not mean the end of digital sales on those platforms in Japan though. It will still be possible to add funds via prepaid Nintendo cards or to funnel funds into a linked Nintendo Network ID (NNID) account online or through Nintendo Switch. So while you will not be able to use a credit card to directly add funds to purchase games on the Wii U or 3DS eShop for the Japan region, the ability to purchase any games you want will still be there. It will just be more inconvenient.
Using a credit card/e-money to add funds on #WiiU and #3DS will end on January 18th, 2022 at 9 am JST. It will still be possible to use Nintendo prepaid cards or use a linked NNID account to add funds with a credit card online or on #NintendoSwitch, then buy on Wii U/3DS. https://t.co/ZhG5NmqDw9
— Cheesemeister (@Cheesemeister3k) July 20, 2021
Essentially, what we are seeing is another step toward sunsetting online support for Wii U and Nintendo 3DS, which already began in other regions in 2019. It may be years before support is fully terminated, and you need not make a mad dash to download any Wii U or 3DS eShop games you missed out on quite yet. It could be a thought to put on your radar though, since both platforms have unique and, in the case of Wii U, surprisingly wide-reaching libraries.