Achaea has a wonderful roleplay implementation, a Voices and Accents system, complete with a guide on how to use it.
HELP 5.21 Voice or Accent
You may either choose a voice, or an accent, in order to express yourself more fully in Achaea. Choosing a voice clears your accent. Choosing an accent clears your voice.
In either case, your accent or your voice are part of what you say or, more specifically, how you say things, and are subject to all of the restrictions in HELP LANGUAGE RULES.
Trying it Out
How does this work? Try:
SET VOICE high-pitched, sibilant
SAY *haughtily to radekk hi :P
You will see:
You stick out your tongue and say haughtily to Radekk, of Allington in a
high-pitched, sibilant voice, "Hi."
SET ACCENT low, guttural
You will see:
You say with a low, guttural accent, "What?"
This is great, I can have a city accent that references my place of living, or a rough, Dwarven accent, because perhaps I play a Dwarf. What could possibly go wrong?
Well, despite this being in place, some choose to ignore it, or even script it out in favour of a heavily accented speaking form. While some people love this 'extra' level of immersion (I've not met many, but I'm sure there are some) for others this makes interacting with the almost unintelligible dwarf or troll onerous. When you find yourself looking to avoid a particular character because roleplaying with them is OOCly a pain in the behind, well, it's clearly not an ideal situation.
Maybe you want to play a hefty, beer-loving Dwarf, but you've been turned off from it in the past by the hordes of roleplayed dwarves whose basic greeting takes fifteen minutes and a dwarven-English dictionary to decipher? If this is you, or you've wanted to play a softly-spoken, sibilant serpent without adding fifty S's into your sentences. Why not give Achaea, a free to play MUD, a try? There are some who insist on the above behaviours, but we do have a commonly used, and very successful alternative!