Most of the online casinos offer their players a very convenient option – no-download instant casino play, providing instant access to the online casino software straight from the players' web browser. This allows casino players to gain instant access to the online casino action without ever having to download and install the casino software, saving time and space on your computer's hard drive. The no-download versions of the online casino usually provide all the same casino games and features as the full software, so it's a nice option when you're in for a quick roulette spin or when a given online casino does not support your operating system.