"The debate here revolves around Pac-Avoid [...] The game strongly resembles another game called ScamperGhost. The details of the situation are complex, but the bottom line is that we should never have published Pac-Avoid. We have taken the game down from our site, and we apologise for having published it in the first place.
Let me be clear: This unfortunate situation is an exception to the rule. King does not clone games, and we do not want anyone cloning our games.
Before we launch any game, we do a thorough search of other games in the marketplace and review relevant trademark filings to ensure that we are not infringing anyone else’s IP. We have launched hundreds of games. Occasionally, we get things wrong. When we do, we take appropriate action."
I'm pretty sure this is an admission that they cloned the game. We know it, they know it, they haven't outright said "we cloned the game", but this is as good as. Unless I'm misreading it, in which case they should correct that statement.
Given that, it would be interesting to know what legal avenues are open to the original developer now. If another party was willing to provide financial support for a lawsuit, surely it's a slam-dunk?
I think the whole issue of whether or not candy crush can be considered a clone is vastly different; obviously, the core mechanism is pretty much (or exactly) the same as in other games, but that mechanism is very straightforward. And I'm not sure the visuals are so blatantly a rip-off. Moreover, I'm unaware of any evidence from a third-party that has revealed King commissioned them to create a clone.