It is a prolific form of online gambling. Online casinos enable gamblers to play and wager on casino games through the Internet. Online casinos, also known as virtual casinos or Internet casinos, are online versions of traditional (' brick and mortar') casinos. ( Learn how and when to remove this template message) Unsourced material may be challenged and removed. Please help improve this article by adding citations to reliable sources. This article needs additional citations for verification.