: Use a tool like DBI (via MTP Responder) or Tinfoil to transfer the .nsp file from your PC to the Switch.
This specific file name refers to a digital copy of the game for the Nintendo Switch. The tags in the filename indicate it is a Base game file in .NSP format, sourced from the site Ziperto . POLICSIM2023-(USA)-NSwTcH-[BASE]-NSP-Ziperto.rar
If you are using a Switch with Custom Firmware (CFW) like Atmosphere: : Use a tool like DBI (via MTP