Quote from the Underworld Ascendant Kickstarter page:

We will be hosting another OtherSide plays LookingGlass Twitch session this upcoming Wednesday, March 4th from 11am to 2pm EST. This week Paul, Tim and Chris will be playing Ultima Underworld, with special guest appearances from Richard “Lord British” Garriott, Stephen Russell, the voice of Garrett the Thief, and others. Please join us in the fun.



I believe the twitch page is here