Dorias (ドリアス Doriasu), the Gambling City, is a city on Greed Island. The staple of this city is a casino. One is not required to wear formal clothes to enter it, and even children are allowed. Some types of specified slot cards can only be obtained by getting a triple seven on a slot machine or by winning poker against the King of the casino. The Risky Dice can be quite useful in this city. Gon, Killua and Biscuit get their Fledging Gambler and Rainbow Diamond cards here.