An online casino is available everywhere there is an internet connection. Even modern mobile phones are access able for casino gaming. If you find a casino that you like you can stay loyal to that casino and play only their casino games. Most casinos offer the same base of casino games. You might be able to find variations but mostly they are basically the same. The difference is the type of software that they use and this is of course a matter of personal opinion. Some prefer software like Playtech or Microgaming some prefer others like Netgaming etc. The real difference is the casino bonuses the casino rooms offer. Some casinos offer very large sign up bonuses. But conditions always apply and make sure you read these conditions thoroughly before signing up at an online casino. The bonus conditions can always be found at the casino promotion section.