: While the download is free, playing Cataclysm Classic requires an active World of Warcraft subscription or game time. Key Version Differences
: If you want to customize your interface, you can manually install addons in the _classic_ folder located within your World of Warcraft installation directory. Getting Started on your Free Trial - World of Warcraft World of Warcraft Cataclysm Download Full Version
: The full game is a large download (often 2.5 GB to 30 GB depending on the version and assets), so a stable connection is recommended. : While the download is free, playing Cataclysm