Multiplayer online game
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A multiplayer online game is a multiplayer video game which can be played via a game server over the internet, with other players around the world. Some prominent examples of this include fighting games such as Street Fighter IV and Marvel vs. Capcom 3, sports games such as NBA 2K11, strategy video games such as Warcraft 3 and StarCraft, older online games such as the Sega Meganet titles, and particularly first-person shooters such as Battlefield 2, Halo 3, Counter-Strike, Quake 3, Team Fortress 2 and Call of Duty: Black Ops. Although, another genre of multiplayer online games is taking over the scene. MOBAs (Multiplayer Online Battle Arenas) have become one of, if not the most, popular genres including titles such as League of Legends, DOTA 2, and HON.
These games differ from MMOGs in that they do not create a persistent world, but create a playing arena for the purpose of a single game or round. In other words, they rely on a game listen server used only for that round, and there can be numerous servers all around the world. MMOGs on the other hand, rely on dedicated servers, as these games must be running continuously.
Server structure and gameplay 
The existence of a wide variety and number of servers has made possible several variations on gameplay.
For example, in Battlefield 3, various servers have their own names, websites and gaming groups known as "clans." Often a list of rules will display when a player first logs on.
Browser-based MOG 
A browser-based multiplayer online game (BMOG) is a special case of multiplayer online game (MOG) in the form of a browser game. The term could also be applied to many other browser-based competitions.
Many types of MOGs can potentially be browser-based. Popular examples include simple web sites such as a simple website for a prediction market or games that involve some 3D rendering such as Quake Live or MMORPGs such as RuneScape.
See also 
- Comparison of MMORPGs
- History of MMORPGs
- History of online games
- List of free MMOGs
- List of free multiplayer online games
- List of freeware video games
- List of MMORPGs
- List of multiplayer browser games
- List of text-based MMORPGs
- Multiplayer video game
- Online game
- Sega Meganet