Massively multiplayer online games, or MMOs, are video games that allow thousands of players to interact in a virtual world simultaneously. Players can create characters, complete quests, and engage in battles, often forming teams or guilds to achieve common goals. These games typically feature expansive environments and a variety of gameplay styles, catering to different player preferences. MMOs often include social elements, such as chat systems and forums, enabling players to communicate and collaborate. Popular examples of MMOs include World of Warcraft and Final Fantasy XIV, which have large communities and regular updates to keep the gameplay fresh and engaging.