Recently i was looking for some gambling sites with games like Roullete, dice etc for some altcoins (dogecoins,ripple) and found this nice website
https://goo.gl/QWTPsd

They have in total 5 games
1. DICE (They have an AUTO mod where you can choose your own settings/strategies)
2. ROULLETE
3. BALLS
4. CELLS
5. HACKER

They accept 48 Cryptocoins which you can DEPOSIT/WITHDRAW
 

If you want to try the games for free they have their own "LUCKY" token which you can claim 500 for free to try the games


The interesting thing about this site is that you can also EXCHANGE the coins there in their inbuild exchange
 

So if you are looking for some gambling website, that accepts a lot of cryptocoins then luckygames is the site you are looking for