This is a basic conceptual guide for casino sites. Casino site refers to a site that provides a variety of games so that existing offline casinos can be enjoyed online due to the spread of the Internet and smartphones. Online casinos, regardless of time and place, have become popular among users who do not have time or money to visit offline casinos. Online casinos, where you can directly bet and enjoy a variety of games through PC and mobile, just like in real offline casinos, you can easily enjoy online casinos in your hand anytime, anywhere. Especially abroad, many online casinos are active even if you look only at the sponsors of soccer players' uniforms. It is gaining popularity as it provides a sense of realism that allows you to play online as if you were at a real casino without visiting the casino in person.