What can you do on that network? Share photos and documents, blast music across devices like an integrated speaker system, and host a multiplayer game, like a poker tournament.
Here, you either join a group or you create one, starting with a single tap.
Password control makes it easy for more than one distinct group to share the same space without interfering.
You'll be able to share photos and documents with Galaxy S3 phones, but only Galaxy S4 phones work with gaming and music sharing.
The GS4 requirement is a limiting factor, to be sure, but knowing Samsung, there's a good chance it will migrate Group Play capabilities to its cadre of mobile devices, like the next Galaxy Note smartphones and tablets for a start.