I think doge is the best coin to play dice, because it's fast at transaction and easy to deposit or withdraw. Also the price is stable too.
Doge coin is the best coin out there to gamble when the price of bitcoin starts its rally and now a days almost all of the major gambling sites allow doge coin but none of the sports book have doge coin which is a real bummer, we need doge coin in sports book too so that people can gamble without using bitcoin and the price is really high to gamble with it.
Dogecoin started off as a ripoff of Bitcoin and its developer(Billy Markus) have stated multiple times that he is not serious about the coin. The positives is that it is having a large and loyal community of users, and the price per coin is low enough to be used in gambling. But if you ask me, I always prefer BCH or LTC ahead of Dogecoin.
Doge gained popularity as there's still community which supporting this coin, a good alternative to transfer your coin between exchange for much lesser fees, aside from that it's also been used as an alternative to online gambling, Bitcoin is getting to expensive so players are looking for alternative, Doge fits for this needs so it continues the process.
Cheap price might stop gambling sites too use it as one of the coin to play because they are looking for more profits so if they are allowing cheap coins then they might get less profits when compared to players playing with expensive cryptos.