Tiny Wings is a phenomenon. Tremendously addictive, and with gameplay perfectly suited to the touchscreen of a smartphone. By touching the screen you make the bird "heavy", and you gain speed down slopes, then release your finger to fly away. Simple and addictive. The system that lets you nest up to increase you multiplier is one of the smartest ways yet to ensure players keep plugging away to achieve high scores, and the design is delightful.