In the past, all casinos required you to download a software package onto your PC. In one way this was good – having the graphics files locally gave you fast, smooth casino games. On the other hand, each software package was created by a different software house. This meant that the game selection of each downloadable casino was limited to just one brand.
There are still downloadable casinos, though most brands now offer their games in no-download format. You simply play them in your browser window. These games use a combination of HTML5, Flash and sometimes Java. With no software needed, casinos now include games from many different casino software makers – giving you more choice.