Nintendo opens new account system in Japan - Polygon

Nintendo Accounts available on Japanese Nintendo consoles

SNES Classic review - Polygon

Untested = Did not test these item(s). Junk = Does not work or only partially works; As is.

Mario Artist Polygon Studio Nintendo 64 Japan NTSC-J 64DD N64 Disk Drive

Mario Artist: Polygon Studio - IGN

Nintendo eShop IARC purchases Now Available for Consumers in Japan

Nintendo is releasing an adults-only N64 Switch app in Japan : r/NintendoSwitch

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64DD Mario Artist Polygon Studio Complete Nintendo 64 DD N64 Used From Japan

Nintendo 64DD Mario Artist Polygon Studio 64 DD US Seller

Nintendo Switch Online: a Complete Membership Guide

Looks like Polygon has done a 180 after a lukewarm Switch review at Launch : r/NintendoSwitch

The Tech Behind Universal's Super Nintendo World