I thought they were calling it something different.

It's called Xbox Games Store and has been for about year now I think. The games themselves are simply "games", there is no branding on them like Arcade or anything... I think?

I believe they still use it in a few spots to refer to the download-only stuff on 360, but there's no equivalent on the Xbox One. It's weird that there's no replacement name when you think about how popular XBLA and the Summer of Arcade promotions were, but I do sort of like the "screw it, games are games we don't need to separate them" approach.

On the 360 I think they still call it Arcade, on Xbox One every game is created equal (in that even the smallest games can have a 1000 points).

The "boxart" for the game says ARCADE KINECT and on the Xbox.com site it also says Arcade Games, so they still call it that, in at least a few places.