First Impression: So polished. Really great colours used, nice font and button images, and icons are all really on point. Cool idea, fun to play with friends. Would be good for mobile. So many topics to choose from, it helps the players choose a topic with such a wide variety built into the game.
Constructive (honest) feedback: Not really constructive, but a lot of the game is down to players rather than the actual application - but that's due to the nature of the game. I can't think of how I would actually implemented / integrate more of the games functionality into the application. I think I would have liked some cheesy gameshow music on the title screen :D