For most online casinos, they allow players to have access to their games by downloading or though flash. The main difference between these two methods is how they are accessed. For the download versions, you will have to download the casino software on your computer. In addition, when new gams are added to the site, they automatically get downloaded to give you ease of access. For flash-based slot, they are played directly on the site using your browser. You can always choose how you want to play your game and any way you chose, the types of game available and the amount never changes.