this site has open scam accusations and admitted cheating a player that , allegedly , took advantage of their bugged game:
https://bitcointalk.org/index.php?topic=1696880.1360 so not putting them on the list makes sense, since some other sites with scam accusations on them didn't make the list either, like duckdice, for example
by the way , it looks like goup
https://www.goup.bet/ is anavailable for quite some time now :
