Because the full game is approximately 11.3GB , it is often split into smaller "parts" (like part 1, part 2, part 3) to make downloading easier. You need all the parts in the same folder to extract the final game file. The Flags:
Stands for "Region Free," meaning it should work on any console regardless of where it was bought. NSwTcH: A stylized shorthand for "Nintendo Switch." MHG-U-RF-NSwTcH-NSP-Ziperto.part3.rar
This file is an NSP , which stands for "Nintendo Submission Package." It’s the format used for digital games on the Nintendo eShop. Because the full game is approximately 11
Essentially, you have found one piece of a digital version of this hunting game. To actually play it, you would typically need a modified Nintendo Switch or a Switch emulator like Ryujinx or Yuzu on a PC. NSwTcH: A stylized shorthand for "Nintendo Switch