: You can build tracks over each other. Don't be afraid to use bridges to keep your main lines from clogging.
: These files are typically used with Nintendo Switch emulators (like Ryujinx or Suyu) on a PC, or on a modded Nintendo Switch console.
: This is a Nintendo Submission Package . It is the digital format used for games on the Nintendo eShop. RAILGRADE [0100F2C0181C4000][v0][US].nsp.rar
If you are looking for a "helpful guide" on how to actually the game once you have it running:
: Downloading "NSP" files for games you do not own is considered software piracy. To stay within legal bounds, users typically "dump" their own purchased games from their personal consoles. Getting Started with Railgrade : You can build tracks over each other
: The .nsp is currently packed inside a RAR archive to reduce file size for sharing. You would need a tool like 7-Zip or WinRAR to extract the actual game file.
: This is the unique Title ID for the North American (US) version of the game. Important Considerations : This is a Nintendo Submission Package
: Files ending in .rar from third-party sites can sometimes contain malware. Ensure you are using a trusted source and scan the extracted contents. The actual game file inside should be a large .nsp file.