Snapchat's augmented reality Lenses are clever, but not particularly engaging. You probably won't use them outside of the occasional moment when they help express what you're feeling. Snap may have a clever way to keep you coming back, though: add a game-like element. It's unveiling Snappables, or Lenses that let you play AR games (and other interactive experiences) with friends. You can fight aliens, blow up virtual bubble gum, or jump into a world like a nightclub. You'll even get a score in some of these experiences, in case you want to challenge a friend.