There are 3 basic types of online slots: those that require you to download the software before you begin to play, JAVA based online slots, and HTML based online slots.

The first type of online slots game is pretty self-explanatory; you will have to download the special software before you can begin playing the games. These types offer the best quality graphics and the fastest gameplay.

JAVA based online slots allow you to play without having to download anything, and the graphics quality and gameplay–while not as good as download slots–are still pretty impressive.

HTML based online slots do not require a download either, but they tend to be somewhat limited.