With the 3DS eShop's closure, the app bridging nearly two decades of Pokemon history is now inaccessible to new users.
Pokemon Bank is - or rather, was - a 3DS app that allows you to transfer Pokemon from the handheld to the cloud storage of Pokemon Home, and through that into the modern games. Between the 3DS Virtual Console versions of Gen 1 and 2 and the convoluted chain of transfers available from Gen 3 through Gen 7, Pokemon Bank supported 19 years worth of Pokemon games.
