PlayStation's Japanese arm released a YouTube video, embedded below, that talks about its "Official Licensed Product" promotions. But within that video is a hidden little nugget of data: PS4, PS3, and Vita combined have sold over a hundred million units worldwide.

The idea of Sony bringing this figure up in this video is, of course, to entice third party peripheral manufacturers to create devices for the PlayStation ecosystem. But for those of us outside of that market, the admission of PlayStation's overall sales since PS3 indicates that the ecosystem is doing well.Indeed, we can even garner some additional data from this number using numbers we already know.We last heard about PlayStation 4's sales numbers in April, when it was revealed that PS4 passed the 7 million sold mark . PS4 has been selling well in the west since then (though not so well in Japan), so we can assume that number, at this point, is north of 8 million sold.As for PlayStation 3, we know that, as of November, 2013, it has sold over 80 million units . PS3 is still a contender around the world, and so we can assume that it's since tacked on a couple of million since November.That leaves us with PlayStation Vita, which Sony is notoriously quiet about in terms of sales, likely because it's just not doing that well. Still, it's seen a bit of a resurgence this year both in Japan and in the west, and if our assumed sales of PS4 and PS3 are taken into account, that means Vita is hovering around the 10 million units sold mark.We've reached out to Sony for clarification on these numbers, including on if they can give us a proper breakdown of hardware sold, and will update if and when we hear back.

Colin Moriarty is IGN’s Senior Editor. You can follow him on Twitter.