To know how to play free online slots games, it is important to know what online casinos offer these games. Online casinos are operated by the most popular online gambling networks that enable players from all over the world to register and play casino games conveniently from their own homes. The games offered by these online casinos are purely a form of entertainment and gambling. Some of these online casinos are based on the real-world casinos, while others are based on a fantasy world like virtual online world or the cyber world. These online casinos ensure that their players are not exposed to the harmful effects of gambling by using various techniques and technologies that protect the players from the risks involved in playing online slots games.