Online play for the Nintendo Wii U and 3DS will no longer be available as of April 2024.
Nintendo has announced that online play and functionality for the Wii U and 3DS consoles will shut down in April 2024, just over one year after the eShop for both systems closed down.
There isn’t currently a specific date for when this will terminate, but it’s anticipated to be “early April.” Nintendo plans on announcing a more specific end date and timing at a later date, as announced in their support blog post. This means that games on both systems will only be playable offline, which will be pretty detrimental to games with such an emphasis on players coming together to play such as Splatoon on Wii U.