>>723011540 (OP)
Play I first. After that play II with maps, because fuck those mazes. After that skip origins for now and play Napishtim(6) and Felghana. Then play Origins.
>>723015905
Ys 1 is kino
Ys 2 is a bit ass
Ys 3 - don't know
Ys 4 - don't know
Ys 4 - don't know
Ys 5 - don't know
Ys 6 is good. Not the best but you will remember it fondly. Look up how to properly do the jump thing though.
Ys Oath (3 remake) is kino
Ys Origin is good. But repetitive
Ys 7 is good. Look up how to properly block stuff. (I played 80% without knowing this.)
Ys 8 is one of the best JRPGs you will ever play. Starts slower than the other titles but it's great.
Ys is okayish. Also a slow start until it gets fun, then it's really fun for a few hours and then it just stops. It doesn't end. It stops. Feels like a waste of time. Skip it and come back if you crave more Ys after playing the other titles.
Ys 9 is very good. Has some annoying mechanics and didn't reach the heights it could have. Also looks weird.
Ys 10 is also very good. To easy and the music is lackluster. About as good as 9 imo.