Large games are often split into smaller "parts" to make them easier to upload and download. A .rar extension means it is a compressed archive. How to Use Split Archives

This signifies the file was "dumped" (copied) from a physical retail cartridge or a digital eShop version into a playable format for computers. ACNH [v0](Dumped).xci..part1.rar

Files from unofficial sources can carry risks. Always ensure your antivirus software is active when handling archives from the web. Large games are often split into smaller "parts"

Right-click on part1 and select "Extract Here" (using software like WinRAR or 7-Zip). The software will automatically pull data from the other parts to recreate the single, original .xci file. original .xci file.