That’s a whole lot of save space!
According to new information, despite the fact that Breath if the Wild for Wii consists of 13 GB, but even if you buy the retail version, you will still end up having to save over 3 GB to your console when you first fire the game up. Worse though is if you use an external hard-drive or even a memory stick to save your games and data on, the Breath of the Wild data, can only be saved to the Wii U’s on USB storage.
So if you aren’t Switching it up March, you will want to consider making space.
Source: Nintendo Everything