This is an excellent question, especially for aspiring online casinos that want to earn high marks on respected review portals like Casino.Guide, which players like you are known to trust.
In the case of Book of Casino, we’d say it’s the sum of its parts more than anything. It looks good and operates great across the board. Plus, the exceptional game variety is always important. And commitment to safety. Oh, and the fact that it has an equally exceptional sports betting site linked to it. In other words, the full package effect is why we’re confident in recommending it to our casino review readers.