Review my game for windows 8 & WP8 platform

Hello,
I've created a game by name, brain lightener for windows 8 and windows phone 8 platform. This is my first game as a developer. So, I request you to review my app and give feedbacks/criticism on it
URLs
Windows 8: http://apps.microsoft.com/windows/en-in/app/brain-lightener/f9eb1d21-6f9a-4737-8df1-c415180fd03a
Windows phone 8: http://www.windowsphone.com/en-us/store/app/brain-lightener/c5edca2f-903a-4f58-b744-e5029988ed38
Review my game for windows 8 & WP8 platform

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