MUD2

MUD2 is the successor of MUD1, Richard Bartle's pioneering Multi-User Dungeon. MUD2 is not a sequel to MUD1, instead being a heavily updated version of MUD1 (MUD1 is officially version 3 of the codebase, MUD2 is version 4) - with the engine being implemented in C, featuring significantly more content than MUD1, and uses a flexible object-oriented scripting language (MUDDLE) to define content as opposed to MUD1's 'glorified table lookup system' (MUDDL).

The game is nominally a roleplaying game, with a strict set of rules, character classes and levels. Characters progress up a ladder of 11 levels until they reach the traditional MUD goal of wiz (wizard or witch).