A multiplayer game is a video game in which multiple people can play the same game at the same time. Unlike most other games, computer and video games are often single-player activities because the computing power exists to create artificial opponents. In multiplayer games, players either all compete against each other, or team up to achieve a common goal such as defeating an enemy that can consist of either computer or human players. Usually multiplayer games either use computer networking to allow players to play together or require the players to gather around a single game system to play.
Networked
In modern computer games, the word multiplayer usually implies that the players play together by connecting multiple computers via a network, usually either a LAN or the Internet. This form of multiplayer is sometimes called "netplay" to refine the meaning. Networked multiplayer games tend to be most enjoyable when played on a LAN because it essentially eliminates problems common in Internet play, such as lag and rude, anonymous players. As a result, multiplayer games usually are the focus of LAN parties. Play-by-email games are multiplayer games that use email as the method of communication between computers. Other turn-based variations which do not require players to be online at the same time are Play-by-post gaming and Play-by-Internet.