OK so I gave this a go last night. Played on MEDIUM, EASY,EASY (I assume default is EASY,EASY,EASY ?).
Got up to 80,050. Then switched it to EASY and couldn't get above 35,000.
This game is much deeper than I remember. It's interesting that there doesn't seem to be any benefit to clear all cherries vs killing all monsters (same 500 pts awarded). But I love the strategy involved in trying to maximize points and get the bonus (man, getting 1 bonus is a challenge but BOTH is hard!)
I found it odd though that monsters didn't seem to dig very much for many games I played, and then eventually they seemed to dig all the time. It felt like the machine adjusted difficulty on me, even after I set it to Easy.