The Cataclysm add-on, Cataclysm, as it was called in the Russian version of World of Warcraft, is the penultimate add-on to the game at the moment, which changed both the relief and the quest system.
Buying the full version of World of Warcraft
If you decide to start playing World of Warcraft from the full version of the game without using the starting free period, you will need to complete a sequence of several steps.
First, you will need to register on the Battle. Net system website and create your own account, to which you can later attach your game account. Through it, the acquisition of game time and in-game pets, vehicles and many other items is carried out. This account will be useful to you even if you plan to purchase other Blizzard games besides WoW - for example, Starcraft or Diablo III, in addition, buying different games gives bonuses in each of them in the form of unique items and pleasant bonuses.
The next step depends on where you plan to purchase the game. There are two options: you can buy the boxed version in any of the stores selling software and computer games, and enter the code from the package in your personal account on the site, or pay for the electronic version through the same Battle. Net ID - and then enter the code you don't have to, since the game will be automatically linked to your account.
Payment and the start of the game are carried out according to the following principle: even with the purchased and activated Cataclysm add-on, you must receive the base version of the game and all previous add-ons (The Burning Crusade, The Burning Legion, which opens the Outland location, and Wrath of the Lich King, Revenge of the Lich King allowing players to travel to Northrend). You can start your adventures in Azeroth only after purchasing them. Fortunately, at the present time, due to the release of Mists of Pandaria and the announcement of Warlords of Draenor, all previous add-ons and the starting version of the game have been combined into a Battle Chest set and can be purchased all together for more than reasonable money - 359 rubles for the Russian version and 14.99 euro for the European one, if suddenly you decide to play on a European server.
Switching from a free trial version of the game
If you already have a free test account, then it would be most logical to purchase the electronic version of Battle Chest and continue the game with the characters you have already created. You will not have to create a new account - you can switch to the full version of the game directly from your personal account in the test game recording section by clicking on the "Full record" button and following the online prompts.