Ursha Null 7 is a Sci-Fi based graphical MUD/RPG. The server supports both telnet and modem based connections depending the particular platform used. Support for ANSI, ASCII and RIP is included.

UN7 offers some unique features such as cellular vision phones that are a necessity for all players to have up to 4-way conferencing, voice mail, and a hand full of other options while in the game. Terminals are scattered throughout the game to interface to the Planetary Interactive Network (PIN).

                            

Probably the most interesting feature is the sound effects and graphics throughout the game and during combat.

NAME   : DikuMUD Alpha
URL    : http://www.dikumud.com
CODE   : ftp://ftp.mudshell.com/pub/mud/diku
CODE   : ftp://dikumud.com/pub/diku
OS     : UNIX
TYPE   : Combat
AUTHORS: Michael Seifert, Hans-Henrik Staerfeldt, Sebastian Hammer, Tom Madsen, Katja Nyboe
Derivative of LpMUD. Below is a DikuMUD Hierarchy:

NAME  : CircleMUD
URL   : http://www.circlemud.org
CODE  : ftp://ftp.mudshell.com/pub/mud/diku/circle
CODE  : ftp://ftp.circlemud.org/CircleMUD
CODE  : ftp://ftp2.circlemud.org/CircleMUD
OS    : UNIX/Win9x/NT
TYPE  : Combat
AUTHOR: Jeremy Elson
Derivative of DikuMUD Gamma v0.0.
NAME   : ROM [Rivers of Mud]
URL    : http://www.rom.org
CODE   : ftp://ftp.mudshell.com/pub/mud/diku/merc/rom
CODE   : http://www.rom.org/download
CODE   : http://www.hypercube.org/tess/ROM
OS     : UNIX/Win9x/NT
TYPE   : Combat
AUTHORS: Russ Taylor, Brian Moore, Gabrielle Taylor
Derivative of DikuMUD Gamma v0.0. The last version of this available to the public is v2.4. Newer versions such as v2.7 and v4.0 are claimed never to be available.
NAME   : Diku II [Valhalla]
URL    : http://www.valhalla.com
CODE   : N/A
OS     : N/A
TYPE   : Combat
AUTHORS: Michael Seifert, Hans-Henrik Staerfeldt, Sebastian Hammer, Lars Balker Rasmussen
Derivative of DikuMUD Alpha. This code base is not available as it is a pay system..
NAME  : TinyMUSH
URL   : http://www.tinymush.org
CODE  : ftp://ftp.mudshell.com/pub/mud/mush/tinymush
CODE  : ftp://ftp.tinymush.org/pub/mud
OS    : UNIX/Win9x/NT
TYPE  : Social
AUTHOR: Larry Foard
Based off of TinyMUD. The system database is stored on disk in this MUSH.
NAME  : PennMUSH
URL   : http://www.pennmush.org
CODE  : ftp://ftp.mudshell.com/pub/mud/mush/pennmush
CODE  : ftp://ftp.pennmush.org/pub/PenMUSH/Source
OS    : UNIX/Win9x/NT
TYPE  : Social
AUTHOR: Allen Schwartz
Based off of TinyMUSH. Although the system database has been moved completely into RAM to allow for larger memory systems with smaller disk storage.