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|Real-time strategy video games|
Massively multiplayer online real-time strategy game (MMORTS) mixes the genres of real-time strategy and massively multiplayer online games, possibly in the form of web browser-based games, in which a very large number of players interact with one another within a virtual world. Players often assume the role of a general, king, or other type of figurehead leading an army into battle while maintaining the resources needed for such warfare. The titles are often based in a sci-fi or fantasy universe and are distinguished from single or small-scale multiplayer RTSes by the number of players and common use of a persistent world, generally hosted by the game's publisher, which continues to evolve even when the player is offline.
See also: Virtual economy
Many MMORTSs feature living economies. Virtual items and currency have to be gained through play and have definite value for players. Such a virtual economy can be analyzed (using data logged by the game) and has value in economic research; more significantly, these "virtual" economies can affect the economies of the real world.
Such games that feature these economies may also allow commodity trading and simulated stock markets.