These files are generally used with Nintendo Switch emulators (like Ryujinx) or on "custom firmware" (CFW) modified consoles.
The game is currently compressed. You would need a tool like WinRAR or 7-Zip to extract the actual .nsp file inside. Important Considerations Elderand (NSP)(eShop).rar
Elderand is a "Metroidvania" RPG known for its gothic pixel art and challenging combat. You play as a hunter navigating a dark world filled with over 60 enemy types and massive bosses. These files are generally used with Nintendo Switch
This indicates the file was sourced from the digital Nintendo eShop rather than a physical cartridge dump (which would typically be an .XCI file). This is the standard file format for Nintendo
This is the standard file format for Nintendo Switch digital games (Nintendo Submission Package).
The game itself is relatively small (around 1-2 GB), but ensure you have enough space on your SD card or drive after extraction.