I did about 1 hour and 40 mins of games, and felt that the energy level was lower.
the rhyming game was really hard for people, and didn't do as well.
I need a microphone.
I did throw in an authentic relating game, "What I notice when I'm with you..." It was interesting, about three pairs gave up on it, and there about about 4 pairs really stuck with it and got a really deep time.
overall, I think people enjoyed it, but definitely no more improv after carby dinners.