I have run a couple of campaigns of UA using the 2nd edition, and have run a one shot using the 3rd edition rules. I've been interested in playing some Unknown Armies, especially the third edition. Most of the meatspace groups I know are running vanilla D&D 5e or Pathfinder. I have seen some actual plays that were apparently hosted on roll20 although by the looks of things nobody has run one on here in about 50 weeks.