Thomas,<p>It took me about a week to get a prototype, two weeks for the first version which was deployed on facebook and about 3 weeks for the version that you see now. Bare in mind that this was a part-time/evening project. Had I done it full-time my guess is that it wouldn't have taken more than 1,5 weeks to complete.<p>As for your suggestions you are spot on. Many people have asked for mouse interaction. And the reflection thing would be cool but I am not sure if it is feasible... I'll have to check.