Tagged: Ultima Online
Knights of Minecraft
A hardcore, open-world exploration-focused dedicated server for Mincraft, heavily inspired by Ultima Online.
Sosaria in Minecraft
Phillip Zibilich has created a massive map of what he calls Sosaria (Britannia, really) in Minecraft.
Project Drake
Project Drake is, or will be, a hybrid 2D/3D online RPG intended as a spiritual sequel to Ultima Online, among other games.