...It is highly customizable, featuring spaced repetition, example word/sentence, question modification, adjustable level/speed/color, load/save game, review report, personal word list, google docs or xml.
!!!NOTE: THIS PROJECT HAS MOVED TO GITHUB!!! RingMUD is an extensible MUD (multi-user dungeon) engine and utility set that draws inspiration from popular tabletop RPG systems and adds a dash or two of its own flavor.