I have been experimenting with this site which is not dice nor slots but a kind of combination of both.
Bustabit is a concept derived from the old csgo:crash days of gambling for cs skins.
I just started using it and it is more addictive then dice or slots cause of the instant payout on seeing your balance making a profit right in front of your eyes.
I am sure there are clone sites of this type of game already since from what I read it has been around going on over two years now.
And I just found out about it just in the last few days.