Can't really say. I don't think any Click game has survived a while on my HDD. Jetballs the oldest on mine since the guy I coded it with keeps saying he'll show me a mean easter egg that he intentionally left in. That was about 2 years ago I think
I will say that my fave would take the foundations of Knytt Stories and add proper stories (scripted cutscenes) and some combat gameplay. Which doesn't exist.
Disclaimer: Any sarcasm in my posts will not be mentioned as that would ruin the purpose. It is assumed that the reader is intelligent enough to tell the difference between what is sarcasm and what is not.