Help us make a Windows Phone 7 app icon for a game called NumberTap

We build Windows Phone 7 applications

We'd like an icon, or "tile" for our new Windows Phone 7 game, NumberTap. It is a fast-paced number problem solving game, pitting you in real-time against all other players around the world to solve the most problems in 2 minutes. Windows Phone 7 tiles are flat and square, so no rounding or drop shadows. It must come in 4 sizes. 200 x 200 pixels, 173 x 173, 99 x 99, and 62 x 62. You should make a simpler version for the 62 x 62. We would also like to use the main focus of the tile design in our application in the header. Some preliminary screenshots of the app are attached to give you an idea of what we mean. Keep in mind the text "NumberTap" will appear in white text in the bottom left corner. See this design guide to see what we mean: http://msdn.microsoft.com/en-us/library/hh202884(v=VS.92).aspx

The tile should be eye catching. Some good examples can be found here: http://microsoftfeed.com/2010/design-trends-80-awesome-windows-phone-7-app-tile-designs/ Some favourites are: ebay, foursquare, google search, I heart Radio, shazam, star wars, tetris 7, yelp, zombie hockey.

Every design category has flexible pricing for all budgets.