I had the same curiosity until I came across a guide that breaks this down in a really clear way. The resource is from Continental Design & Engineering and you can check it out at https://continental-design.com/ right there. They have a guide called "Designing an Online Casino Game: The Example of Boom City" that goes beyond just the technical side. It explains how user behavior, gaming psychology, and strategic design choices all come together to make a game engaging and profitable. What I found interesting is that it is not just about flashy graphics, it is about understanding how players think, what keeps them coming back, and how to structure rewards and feedback loops. The guide is written in a way that is accessible even if you are not a developer, but it also has enough depth for people who are. If you are curious about the craft behind these games, this is a great place to start.

That sounds exactly like what I was looking for. I am really interested in the psychology behind game design and the Boom City example sounds like a great case study. I will definitely check out the guide and learn more about how these games are built. Thanks for the recommendation.