What? No, of course it's a game. It's under 'games' in steam. That's like the Bible, guys.
Seriously, though, this is a neat piece of software. While there are other programs that achieve the same effect, none of them do it in 3D, and none of them allow you to flip a virtual table. Also, there is a larger game library within it (from mods) than any of it's competitors.
Whether it's Werewolf, Cards Against Humanity, or Monopoly, you can sit around a table with your internet friends and play games designed for meatspace.
SO MANY GAMES, GUYS, SO MANY GAMES
