Pokémon Sun and Moon brings a Mega-file size
You may want to consider getting a larger SD card if you’re low on spare space.
The official Japanese website for Pokémon Sun and Moon has given us an estimate for the file size of the games. It’s nothing to sneeze at — it comes to 3.2 GB (26,215 blocks). That is a lot to download if you plan to get the games from the eShop. You may want to get a larger SD card – 8 GB at least if you haven’t downloaded many files. The website suggests bigger than that. Luckily, a 32 GB SD card can be found for $12 on Amazon.
This is a step up from previous games. Pokémon Omega Ruby and Alpha Sapphire were 1.8 GB. Pokémon X and Y meanwhile had file sizes of 1.7 GB. These games were also for the 3DS, so it’s an indicator of the extra memory required for Pokémon Sun and Moon’s upgraded overworld — and perhaps features and Pokémon models as well.
Furthermore, for those who purchase Sun or Moon digitally, you will need to have both the demo and the digital game installed on your SD card to be able to transfer your Ash-Greninja — which means you’ll need a good amount of space on your card just to be able to link and transfer it across.
Are you planning to download Sun and Moon?