For the Wii it didn't break anything for things that had online aspects. There may be some games like Pokémon gen 6&7 that will lose access to a good amount of content, but at this point the 3DS has been completely broken by homebrew, and I'd imagine they'll do what they did with MarioKart Wii and set up new servers for the most popular games.
Does this break single player games?
For the Wii it didn't break anything for things that had online aspects. There may be some games like Pokémon gen 6&7 that will lose access to a good amount of content, but at this point the 3DS has been completely broken by homebrew, and I'd imagine they'll do what they did with MarioKart Wii and set up new servers for the most popular games.