[Kronopath]

There was the free Planet M.U.L.E., from 2009, which had online features and updated graphics.

Here's some videos: http://www.youtube.com/watch?v=5LiqbEvEnrg http://www.youtube.com/watch?v=G1W52wQUkKc

Unfortunately, the website for that game seems to be gone.

[discostrings]

Planet M.U.L.E. is still around--at least as of a week or two ago! I haven't played in a while, but I check the site everyone once in a while to see if there's any news and whether people are still playing. Here's a cached version of the site from January 29th: http://web.archive.org/web/20130129005307/http://www.planetm... . I'm guessing they're just having minor issues.

I highly recommend it!