What are crypto casinos?

What exactly are crypto casinos, could you elaborate? Are they just online casinos that accept cryptocurrency as a payment method? Or do they offer unique features and experiences that traditional casinos don't? Is there a specific type of cryptocurrency they tend to prefer? How secure are these transactions? And what are the potential risks involved in gambling with cryptocurrencies? Finally, do crypto casinos operate under any specific regulations or laws? I'm quite curious about this emerging trend and would appreciate your insights.