Well thanks for these infos as I’m getting more familiar with RA.

I’ve ripped all my games just for memories (I have maybe 10 between my dreamcast and ps2) and also downloaded RA compatible versions of the ones I see myself playing often.

Well I got the two Shenmue games from a redump collection on archive.org so that’s a good start.

So maybe I should just install a Dreamcast emulator in Retrodeck and then try to find a way to see if the game works with retroachievements.

It’s just that I got burned playing a few hours of Sega Superstar Tennis on PS2 only to discover later that my european version isn’t the right one for retroachievements.

Edit: In the end I just downloaded the games from https://archive.org/download/RedumpSegaDreamcast20160613 and https://romsfun.com/roms/dreamcast/shenmue.html and, when launching them, I got an information that I had something like 0 out 115 achievements, so I know these games work with retroachievements. Thanks!