Massively multiplayer online role-playing games (MMORPGs) blend the genres of role-playing video games and massively multiplayer online games, potentially in the form of web browser-based games, in which a very large number of players interact with one another within a world.
As in all RPGs, the player assume the role of a character (often in a fantasy world or science-fiction world) and takes control over many of that character’s actions. MMORPGs are distinguished from single-player or small multi-player online RPGs by the number of players able to interact together, and by the game’s persistent world (usually hosted by the game’s publisher), which continues to exist and evolve while the player is offline and away from the game.