It’s possible to create a game that’s fun, not because the design is good, but because it’s built on an inherently fun activity. When working on a game whose foundation is something like Truth or Dare–something that’s popular even before your game gets involved–it’s critical to pay close attention to what your design is doing. You’ll get lots of positive feedback just because the foundation is entertaining, even if your design isn’t adding a lot of value (or, for that matter, is subtracting some value!). Listen closely to the feedback, and make sure it’s about your design, rather than the underlying activity.