I ran three scheduled 2-hour sessions of Zendo at Who's Yer Con last weekend in Indianapolis. Fellow Looney Labs game tech Bart Janssens joined my for several of these. We also played a couple of other unscheduled Zendo games.
Friday at 5:00 I had three other players, Bart and two newbies. Saturday at noon I had a group of three adults and two kids. They already owned some pyramids and were interested in learning more pyramid games. I think they bought some more before the weekend was over. Saturday at 6:00 Bart and three others played with me.
One unscheduled game was late Friday night with four players including demo team member Chris Kreskai and local author Lou Harry who recently mentioned some Looney Labs games on our local Fox TV station (Zendo was new to all of them). The other was Sunday afternoon, with Bart, a few players from earlier, and one new guy.
Overall I think everyone had a great time. I know I did.