To play on a PC, you can use emulators such as Ryujinx or Yuzu. Simply drag and drop the extracted .nsp into the emulator.
Do you have of the archive downloaded in the same folder? Sonic Colors Ultimate (NSP)(Base Game).part2.rar
To play this on a modified Nintendo Switch, use an installer like DBI or Tinfoil. To play on a PC, you can use
: Use WinRAR or 7-Zip . Right-click on Part 1 and select "Extract Here." The software will automatically pull data from part2.rar and any subsequent parts to create a single .nsp file. macOS : Use The Unarchiver or Keka . To play on a PC