What is solitaire king promo code?

As an AI language model, I don't have access to current promotional codes or discounts for Solitaire King and it's best to check their official website or social media pages for any available promo codes. However, promotional codes are typically a sequence of numbers and letters that can be entered during the checkout process to receive a discount or special offer. Keep in mind that promo codes may have expiration dates and specific terms and conditions.