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Server emulator

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A server emulator is a term that got widely known in recent years in the field of online multiplayer games. For many popular online games at some point third-party reimplementations of the original server software emerge, which are known to be called "server emulators". Like the more traditional understanding of an emulator, they allow you to run your game-client without the use of the game creators server hardware and software.

History

With the rising popularity of commercial MMORPG internet games, came the desire from ardent players of rver reimplementation like UOX which was the pioneer. A lot of forks and reimplementations followed UOX, because it released its source code under the GNU General Public License relativly early. RunUO is today the most widely used UO-server emulator.

Game companies usually tend to try to hinder emulator development by encrypting the data stream. However since the client needs to understand the data, in encrypten terms the "attacker" is always equipped with a decyphering machine. Therefore the original game designer can only add layers of strenuousness to decypher and understand the data stream, he cannot hinder it with cryptographic tools.

Legality

The legality or illegality of server emulators is a recurrent argument. Server Emulators are presumably legal if done properly. The first issue is a possible infringement of the game creators copyright. As the case of Lotus v. Borland demonstrates recreating "methods of operation" is not a copyright infingement. Thus emulating copyrighted material is not a breach. However this demands that the complete emulator is a work of it's own. Sometimes the original server software leaks out of the company that created the game like for example AEGIS (Ragnarok Online). Use or distribution of this is definitly a copyright infringement. Modified version of such original server software are not considered to be a server emulator.

Another legal issue is the EULA. Today most commercial MMORPG require the user to sign a clause not to create or use server emulators when installing the client he bought. This issue has not yet been test infront of any court.

There are cases where a game creator effectifly shut down popular private game servers by law suit threat. But the reseans were always based on obvious copyright violations like for example offering the client for download, or also offering downloads of modified files from the original game package.

List of popular server emulators

See also

  • VMWare has a server edition, that is, although very seldomly, sometimes mistakenly called "server emulator" which can be mismatched with this article.
  • - Server Side Emulation Community News and Resources
  • - Announcement of a Starwars Galaxies server emulator on slashdot
  • - google group of Ultima Online server emulators
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