Storing your set as .7z files (Solid mode with LZMA2) will reduce a 700 GB trimmed set down to roughly . The only downside is that you must extract a game before playing it, which takes 2-3 minutes per title.
Expect a full, uncompressed, worldwide 3DS No-Intro set to sit at 1.4 TB as of mid-2026. With compression (.CIA) and removing duplicate Japanese titles, you can trim that down to a manageable 900 GB . Plan your storage accordingly. 3ds Complete Rom Set Size
How Large Are the Complete 3DS, NDS, GBA, GBC, and GB Libraries? Storing your set as
The 3DS library consists of diverse content types that impact total storage: With compression (
The most common question asked in preservation circles is:
This covers the entire global library, including regional duplicates (Japan, US, Europe). North American (NA) Full Library (~400GB):