I've been playing the Discworld Mud off and on for the past seven years. The changes over that time have been amazing.
If you are fan of Terry Pratchett's Discworld books, you will love being able to visit places from the books and interact with your favorite characters. It is great to be able to discuss the books with fans from around the world and help come up with ideas to bring more of the books to life.
If you haven't read the books, you will still find the Discworld quite enjoyable. It seems to offer something for every style of play. There are thieves and wizards, assassins and witches, warriors of many kinds and priests galore. There is role playing for those who enjoy it but it isn't required for those who don't.
The world is huge, and there are still many areas from the books that have yet to be developed. I've seen the many guilds evolve and develop over the years and they just keep getting better and better.
The best part of the Discworld Mud is the people. You will always get one or two gits in the bunch, but all in all, they are an imaginative and funny group from all over the globe that are a delight to know.