After two years, I’ve returned to The Cavern.
In 2003 Cyan Worlds, creators of the mega-hit video game Myst, released Uru: Ages Beyond Myst. It was planned to me a truly cooperative MMO where players would help each other solve puzzles and continue the story begun in the five titles that made up the main series.
Sadly, it was not to be. In 2008 the game was taken off-line; lack of subscribers being the main reason sighted for its downfall.