There were a series of muds created by Paul Barnett and Doug Goldner - Terris, Cosrin, and Kingdom of Heroes (Previously Wolfenburg, Defunct like the MMO.) Terris pioneered MUDS on AOL, F2P on the UK servers, and pay hourly on the American side. Terris had well over 100+ players, and word of mouth says it reached somewhere around 500+ people in it's prime. Cosrin was the second re-imagining of their 'perfect world' vision, and focused more on Player interaction and RP. They then moved onto their third world with Wolfenburg and finally achieved what they wanted - No one wanted to play it, though.

Terris and Cosrin remain the love children of Paul/Doug, and I cannot speak for Terris, but Cosrin has broken away and done it's own thing. Focusing primarily on Players, RP, and Lore, the world is vast and with the complete reboot of the world, it's open to be rediscovered and the world rewritten. Old Immortals have been cast out, heroes have yet to step up, and legends are ready to be made. Cosrin: A New Dawn (AND from now on.) is ripe for the pickings. No auto combat, four guilds that are player run, built, and maintained. With completely original content built over the course of many years by the volunteer staff, Cosrin is extremely unique in what it does and will continue doing.

With over eight player classes, four guilds, over 10 races (A handful of them RP driven), and all new ideas driving the content of the game. You're missing out if you haven't stopped by and at least spent a few hours checking the game out and joining in on the fun with the players and staff.