Bedplay.7z.003 -

All files must have the exact same base name (Bedplay) for the software to recognize them as one unit.

Download and install the 7-Zip Official Tool or WinRAR. Bedplay.7z.003

The software will automatically find part .002 , .003 , and so on, to reconstruct the full file. All files must have the exact same base

You don't actually "open" part .003 directly. Instead: Navigate to your folder containing all the parts. Right-click on Part 001 ( Bedplay.7z.001 ). Select 7-Zip > Extract Here (or "Extract to Bedplay/"). and so on