I added them to bitcoin scammers. http://bitcoinscammers.com/bitnopoly-com/ I hope this helps and sorry for the bad outcome. Let us know if he decides to fix things.
Bitcoin Scammer please please remove his site from the scammer site as it is defintely not. I have been playing this for a week now and its both fun and fair. Sure it has its bugs since its new but every issue is addressed promptly and fairly. I personally have seen a few people via coinchat and have myself had successful withdrawals from the site. A lot of these people/scammers are abusing the system. Everyone upon signup starts with 100 free bitcoin points and if you make 5-10 accounts can play your self and easily withdraw the bitcoins. A lot of people will do this since making 5 accounts and losing is equivalent to about .05 bitcoins. Of course this can be monitored and that is why some people are not getting their withdrawal since they are abusing a very kind gesture.
As for whether this guy scammed I do not know and I will not take sides but can personally say the site itself is not a scam site