If you intended to play this game, you would first need to extract the .rar file to get the .xci . Please note that using such files typically requires a modified Nintendo Switch console or an emulator like Ryujinx or Yuzu.
: This is the Title ID , a unique 16-character hexadecimal identifier used by Nintendo to identify this specific game on its servers and consoles. Carto [0100810012A1A000][v0][US](Dumped).xci.rar
The text you provided is the filename for a of the puzzle adventure game Carto . This specific file format is commonly used in the Switch emulation and homebrew community. If you intended to play this game, you
: A compressed archive format. To use the .xci file inside, you must extract it using software like WinRAR or 7-Zip . Carto [0100810012A1A000][v0][US](Dumped).xci.rar