Updated: 06/16/2017 by Computer Hope

MUDShort for Multi-User Dungeon, MUD is an online, text-based, virtual environment first created by Roy Trubshaw and Richard Bartle in 1978. MUD's later became global in the MUD was known as MAD, which was created in 1984 and ran across BITNET. In the picture is an example of Aardwolf, a more recent MUD that can still be played on computers today.

Today, there are still hundreds of multi-user dungeons that can be played through your Internet browser, connecting to another server, or by downloading software to your computer.

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Game terms, MMORPG