Each state has different rules and legislation regarding gambling. In DoubleDown players can buy tokens and use them to play the slot. Similar situations occurred with other games at the social casino, which was a subsidiary of International Game Technology. Such a way of gambling is illegal in Washington.
That is why the social casino has filed a case against this big slot provider. IGT considers that they have a high chance to lose the lawsuit. Preparing €150m in advance can help the company to cover the compensation and other related payouts.