Two fingers
One for each knob: balance is everything.
Two knobs, one rope, a swinging weight

Slide two knobs up and down with two fingers. The weight on the rope rolls toward the lower one, so keep it above the winding path.
One for each knob: balance is everything.
Collect them while the path winds over the water.
Three hearts in the game, one in the Challenge, with a new level every forty metres.
The Plus editions have no advertisements at all, and on iPhone and iPad they bring Game Center leaderboards.