Massively Multiplayer Online Games (MMOs) are online video games that allow thousands of players to interact and play together in a virtual world. Players can create characters, complete quests, and engage in battles, often in expansive environments. MMOs typically feature persistent worlds, meaning the game continues to evolve even when a player is offline. These games often include social elements, such as guilds or clans, where players can team up for challenges. Popular examples of MMOs include World of Warcraft and Final Fantasy XIV. Players can enjoy various genres within MMOs, including fantasy, sci-fi, and simulation.