There are multiple ways that you can play casino games online for free. One of the more common ways is to register a “fun play” account with a casino. The main reason is to allow you to gain exposure to the type of games they offer with the eventual hope that you will elect to make a deposit. However that is not required of you and you are free to play under a “fun play” account for as long as you may like. It will let you play any of the games that are available with the only exception to that being progressive games.