Existing PS4 player has to buy a PC copy?

[Erendis]

If you register second version you get additional 30 days of free time too.

[DefendPopPunk]

You definitely need to buy it again. I'd wait for a sale though, it goes on sale like every couple of weeks it seems (likely exaggerating).

[Ere]

I have it for both my PS3 and PC, though I hardly play on PS3. Anyone who wants to play on more than 1 platform will need codes for each. If he logs into the mog station it will say which platforms are currently registered to his 14 service account.

[LineageRazor]

Yes, you need to buy the PC version as well. It is irritating.

Even MORE irritating, though: You need to buy both the PC and PS4 versions to play on ANYONE's PS4 or PC. Accounts SHOULD be platform independent, but they aren't. Registering PS4 lets you play on any PS4 in the world with the software installed. Registering PC lets you play on any PC in the world with the software installed. But you have to choose one or the other unless you register both. It's frankly kind of bizarre.