This type of casino download is that require you to download a program for free. These casinos are usually the most fun to play, but you will have the program on your hard drive. This means that you have to wait for the application to download from the Internet and then install it on your computer. Once installed, these programs typically offer great graphics, sound and animation.
The second type is a casino download that uses JAVA instead of a downloaded program. These JAVA applets run through your web browser. Some of these online casinos offer sound and animation, and all of them offer some pretty graphics.
Alternatively most casinos that offer software download is free and results in better graphics and smoother game play.