It looks like The Hub has another game in the works! Unfortunately right now, the only thing you can do with it's page is watch the loading emblem blink and spin, but that's pretty fun regardless right?
The Mahjong game started off on a similar foot, and took a few days to officially "Release". Keep an eye out and let us know if it launches!
You can find it's future page here!
Thanks to... Rainbow Dash... for the heads up!