Well I gave it a go... awful, just
awful.
They don't bother to explain absolutely anything about the mechanics or what this cards system thingamejig is nor how to use it - not smart when this is presumably what is intended to distinguish Ys.
The 'tutorial' consists of walking along a long empty path, with instructions periodically popping up - as super fine print against a bright background (which is also how the chat & info window is displayed).
No WASD, no arrow controls, hypersensitive camera with inverted controls that cannot be switched (N.B. I've never even heard of an inverted mousewheel camera control before), erroneous ability descriptions etc.
100% Unready for open beta - first impressions count, people!
Sadly not worth the electricity spent downloading it.