It's nice to see that XSeed has finally gotten serious with getting its games to GOG. I already own the games on Steam. (though I double-dipped just to show support to XSeed)

Anyway, while Ys1 and 2 are both enjoyable games that may still put some people off for being too old-school (despite the fact we're on GOG here), Felghana and Origin still have extremely solid gameplay even by today's standards.

These games are worth buying for the awesome soundtrack alone.

Yep. The Oath in Felghana is a great introduction to the series but Origin will always be my favorite Ys game. They are all wonderful in their own way.