Nintendo's official website briefly displayed The Legend of Zelda: A Link Between Worlds as available on Nintendo Switch Online, according to screenshots posted by Reddit user vertexjrpg. Kotaku confirmed the Nintendo Switch Online indicator appeared on the company's 40th anniversary website as recently as this morning and was present since at least November 4, when the History section launched. Nintendo removed the listing by this afternoon.
The error likely stems from a website mistake rather than a planned feature announcement. A Link Between Worlds is a 3DS title, and Nintendo Switch Online does not currently offer games from the 3DS, Wii, Wii U, or DS libraries. GameCube and Game Boy Advance titles became viable for NSO only with the Switch 2. Kotaku reached out to Nintendo for comment.
Obtaining 3DS Zelda games legally requires owning the physical console and either a physical cartridge or a digital copy from the now-closed Nintendo 3DS eShop. Other inaccessible titles include numerous Pokemon games exclusive to that platform.