A bit of clarification on the My Little Pony "Puzzle Party" game was sent over to us by the people currently working on it. Currently the project is in it's "Soft Launch" phase specifically for the New Zealand, Spain, Mexico, and Australia markets. You may have run into that issue when attempting to download it. While there are ways to spoof being in another country, it's official release globally will be in late May or early June. Starting May 12th, Android users will be able to pre-register it through Google Play.
Apparently, a bunch of bronies were on the team that made it. That's always a good sign right?