It would be interesting if Apple would step in here. They could, given their obscenely vague appstore "rules", simply delete the CandyCrush Saga game out of the store as it is a copy of an existing game. That would force King to be a bit more creative in their copying in the future.

That said, "protecting" games has been a problem, almost literally forever. On the one hand you want folks to benefit from there work, on the other hand sometimes a 'derivative' is a much much better game. So do you cut off that like we've done with software patents? Or not?