Isn't this "kind of" allowed on the "Games and rounds"? Because I see many other gambling websites doing a similar thing and their threads are months old.
As loyce said, it is for bitcoin giveaways.
They have a slot machine which is part of Gambling and I doubt there is a possible different section for that.
If they are accepting only altcoins their gambling site should be in altcoin section, gambling section is for sites which are accepting bitcoins or bitcoins and altcoins, I am 100% sure in this (unless something has changed recently
)