Not every multiplayer PlayStation 4 game will require PlayStation Plus; when it comes to free-to-play publishers will have the choice, and Sony Online Entertainment has decided against it.
SCE Worldwide Studios boss Shuhei Yoshida confirmed the news with Polygon.
"As far as free-to-play games are concerned, it's a publisher's decision whether they put it inside or outside of the PlayStation Plus requirements," he said.
The news came following word that Sony Online Entertainment's two PlayStation 4 MMOs, DC Universe Online and Planetside 2, won't require PlayStation Plus subscriptions.
Both games will allow PS3 and PS4 players to play together on a single server.
We've fired off a couple of urgent queries on the subject of whether subscription MMOs will require a PlayStation Plus account; on Xbox Live, the only comparable console subscription service, an unpaid Silver account will do for games like Final Fantasy 11.