One of the few puzzle games on miniclip, ninja pig is more of a reflex game. Make a pig fat so it can bump and kill dragons.As you bump a dragon, you and the dragon will shrink. hover over a pig to make it grow. Dont make the pig grow and hit a monster. Once a monster is very small, it will convert to a ninja pig. If your pig grows small, it will convert to a dragon. They are 50 levels. In some levels, you start with many pigs, or vice versa.
Note that ox do not damage you, but bounce you arround.
Also, doubble headed dragons grow bigger when left allone.