Clone Gangster Script

I am looking for a clone of the [login to view URL] game. The script would need an admin panel which will allow me to edit users, install rounds and track users. The script should have most (if not all) of the features (the features that can be missed can be discussed further if needed but would prefer them not to be left out) from the [login to view URL] site. This project will also lead to further jobs in maintaining the site and improving it.