Quoted from Honch:Not too simple like an EM
Don't underrate EMs! To me, EMs are all about nudging and ball handling skills - the themes and rules don't mean that much. You have to be a GOOD player to get a high score on a lot of EMs. Try getting more than about 40k on my Zodiac, or see if you can get all of the colored balloons lit on Mini-Zag. You will play dozens of games before you start getting close.
All of my tilting technique and flipper skills came from years of EM practice, and I keep playing them to keep my reflexes as sharp as possible.
I love a good game of Hobbit or Monster Bash, but I'll always go back to Time Zone or Jungle Queen for the excitement of pure pinball.