Let's face it: match-three puzzlers have become a little stale on mobile. Not just because there's a helluva lot of them, but also because the genre was originally designed for players using a mouse, not a mobile keypad. Moving a cursor round the screen to swap gems, balls or cubes can't help but feel a little clunky, even in the best examples.
That's why iPhone (and touchscreen phones in general) have reinvigorated the genre. Tapping and swiping is perhaps the most tactile, intuitive way of playing these games--arguably better than using a mouse. A touchscreen can't make an unoriginal puzzler special, but it can make the best ones even more addictive.