Revisiting @G_S_Bhogal’s superb Why Everything is a Game His guide for good games—choose: 1. long term games over short-term 2. hard games over easy 3. positive-sum games over zero-sum 4. Atelic games over telic (to enjoy > to win... See more

Consider your own product. Is it fun, even without a goal? Does it indulge moments of playful exploration? Does it create moments of pleasant surprise? If so, congratulations because then you have a toy and you're on the way to building a great game.