Have a look at https://apps.facebook.com/savingxena/
Following are the requirements:
We will provide all graphics & sound; you only need to focus on the code.
Port the game from Stencyl to Unity3D.
Port the server side code from java to php.
Ensure the game works on Facebook, iOS & Android.
Add basic account creation functionality.
The user can log into the same account from Facebook, iOS & Android.