Hello I've been a fan of PSU for quite some time now, and I recently saw a video on youtube about Phantasy Star Portable 2 I thought, wow this look really awesome, so I'm plaing of getting an PSP and the game, my questions are:

Does it require a subscription like PSU?

Does it has an offline mode too or is it Online only?

Is there any other Information that u know of that I should know?

/thanks