To share a recent experience... we just used outbackteambuilding.com for a virtual murder mystery that the board really enjoyed.
I liked that it was more engaging than just eating or drinking virtually together. It gave them a good mental workout and brought out a little competitive spirit while still letting them work together and get to know eachother. Engaging host took care of all the event administration.
They also have options like trivia and gameshows which might be good as "lighter" options, but I know we have smart and serious bunch so I went with the more challenging murder mystery.
We compared a number of virtual teambuilding providers. Message me and I can share our chart.
