First the Pros:
The game is fun and funny. Very Harold, and much more Harold on top of it.
I liked the spinning. I got a small chuckle out of some of the sound effects.
And the Cons: I'll admit it, I pretty much gave up at the second rock puzzle. I know there is a solution to it from reading the comments, but it broke the flow for too long in the game and had more fun things I could be doing.
It was a difficulty spike in the logic that had no warning and could have been either toned down, or had other puzzles leading up to it that slowly increased the logic difficulty.
Overall it was fun and cute. The chaos and randomness added well to the charm!