3ds Games Highly Compressed -
This is where high compression comes in. By removing padding data and optimizing files, you can slash game sizes by up to 40% to 80% without losing a single frame of gameplay.
You cannot play a game while it is inside a .7z or .zip archive. You must extract it back to its .3DS or .CIA state before your console or emulator can read it. The Best Tools to Compress Your Own 3DS Games 3ds games highly compressed