World of Warcraft
"World of Warcraft" was first announced by Blizzard at the ECTS trade show in September 2001. Released in 2004, development of the game took roughly 4–5 years, including extensive testing. The 3D graphics in "World of Warcraft" use elements of the proprietary graphics engine originally used in "Warcraft III". The game was designed to be an open environment where players are allowed to do what they please. Quests are optional and were designed to help guide players, allow character development, and to spread characters across different zones to try to avoid what developers called "player collision". The game interface allows players to customize appearance and controls, and to install add-ons and other modifications.
World of Warcraft
"World of Warcraft" was the world's most popular MMORPG by player count of nearly 10 million in 2009. The game had a total of over a hundred million registered accounts by 2014. By 2017, the game had grossed over in revenue, making it one of the highest-grossing video game franchises of all time. At BlizzCon 2017, a "classic" version of the game was announced, which is planned to provide a way to experience the base game before any of its expansions launched. Blizzard announced at BlizzCon 2018 that "WoW Classic" will be released in the summer of 2019, and will be included with the standard subscription.