as domain only without any hits it have a small value- under 100$.
but with hits and if they are coming from search engines and if they are all from different PCs it have a value interesting for online casinos. I suppose those hits are from ones who just do not put the dot between www and cas...
Probably you already tried to contact
www.casinogame.com /net etc. and informed about your hits?
But maybe it is still a small figure. I have noted that more than 100.000 already is amount which makes more sense.
I would suggest to look at all last site with traffics sales and analyse how much cents or dollars are paid for the site per 1 hit a month. And take a special look at online entertainment site sales.