LAN party
A LAN party is a gathering of people with computers or compatible game consoles, between which they establish a local area network (LAN), primarily for the purpose of playing multiplayer video games. The size of these networks may vary from the very small (two people) to very large installations of hundreds or more. Small parties can form spontaneously, but large ones usually require a fair amount of planning and preparation. As of 2013, the world record for the size of a LAN party is 17,403 connected systems, set at DreamHack, in Jönköping, Sweden.
LAN party events differ significantly from LAN gaming centers and Internet cafes in that they generally require participants to bring your own computer (BYOC) and are not permanent installations, often taking place in general meeting places or residences.
Small LAN parties
Usually, smaller LAN parties consist of people bringing their computers over to each other's houses to host and play multiplayer games.
These are sometimes established between small groups of friends, and hosted at a central location or one that is known to all participants. Such events are often organized quickly with little planning, and some overnight events, with some stretching into days (or even weeks). Because of the small number of players, games are usually played on small levels and/or against bots.