AQWorlds is a Flash based massively multiplayer role-playing game! You can have an account and play it from any computer all over the world! It is not tied to your computer and you do not have to install AQWorlds to play the game.
It used to only be playable on a computer with a browser, but Flash is usually disabled on most browsers, but can be enabled if you choose. You can download the Artix Games Launcher and play without a browser! This is an official download created by the Artix team and is safe to download.