Instance Saving Inconsistencies and Directory Management in MelonDS about melonds HOT 3 OPEN

You don't need to do all that, you can use the same copy of melonDS and the same ROMs.

from melonds.

But if I wanted to play with different profiles using local download play I'll have to keep renaming files to .sa2, and back to .sav if I want to play alone.

from melonds.

The main reason for this is that when different people use save files to play locally using download play, I keep them in sync, each in a respective folder with its own ROMs and save files. (I know I could use the same ROM, but I just tested it, hoping it wouldn't create .sa2, .sa3, etc...) This allows them to play on their devices and also resume when playing together.

from melonds.