gamingeek said:

Nintendo switch 2 edition physical games are now complicated.

They might just be red coloured Switch 1 carts with a download code for the upgrade. At least that's what a customer service agent at Nintendo UK said.

So if you resold the game, could the new owner use the upgrade code? Or is the upgrade code embedded on the game carts?

And what happens 20 years from now if the servers are down and you want to redownload the upgrade?

Really stupid on Nintendo’s part. I would have purchased those games again if they were the actual Switch 2 version of the game fully on the card. Definitely not now though.