(UPDATED DESCRIPTION AND CLOSED CAPTION 11-26-2014)
Featured on Equestria Daily!
http://www.equestriadaily.com/2014/11/awesome-japanese-pony-game-in-works.html

Thank you for the many, many comments!
It is difficult for me to be a response to all comments but I read them all.
I'll try hard.

I used this for BG Music.(Thx for epic remix!)
You'll Play your part (Mystery Orchestral Remix)
https://www.youtube.com/watch?v=z_Mty6o1EnU
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This is a solo project and now under development.(Yes. you can't play yet.)
I need more time to finish my project. but I hope it's going to be a prototype demo this winter.
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Genre : Side-scrolling action, PvE only, no multiplayer(for now)
Supported Platforms : Windows, Mac OSX
Interface Devices : Gamepad(Xbox, PS4, any), Keyboard and Mouse

That has the possibility of changing.
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Mechanics
http://tmblr.co/ZfpKgm1WSSzSe
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English is not my native language, but I'll try it. Sorry for any grammatical errors.
My Little Pony belongs to Hasbro.