World of Warcraft
Players create a hero in the fantasy world of Azeroth and undertake quests, explore dungeons, and battle enemies solo or in large groups of up to 40 players in a persistent online world that never stops running. The game's systems of progression — experience points, gear tiers, and social structures called guilds — created an ecosystem with the depth of a second life. At its peak, it required thousands of hours to experience all of its content.
World of Warcraft mainstreamed the MMORPG genre and transformed online gaming into a social phenomenon, reaching 12 million subscribers at its peak. Its model of subscription-based persistent-world play became the template for the live-service games that dominate publishing today. It also proved that games could support sophisticated economy and community systems that outlasted the intentions of their designers.
Released as broadband internet became genuinely ubiquitous in American households, WoW arrived at the exact moment when online gaming could scale to millions of simultaneous players. Its success coincided with a global conversation about gaming addiction, as the concept of a game that truly never ended was new and unsettling to many observers.
Ubiquitous broadband internet shifted the medium from solo play to massive persistent social worlds, creating entirely new genres and business models. The MMORPG, the competitive shooter ladder, and eventually the live-service model all emerged from this transformation of games into always-online social spaces.