It means Multi User Dungeon. It's a networked multiplayer game, usually focused on dungeon-crawling as the name suggests. Early ones were based heavily on BD&D and AD&D, but others got more creative.
It means Multi User Dungeon. It's a networked multiplayer game, usually focused on dungeon-crawling as the name suggests. Early ones were based heavily on BD&D and AD&D, but others got more creative.