It's counter-intuitive that performing too well makes gold scarabs impossible to get. (Level two, trying to avoid accidentally killing the sun king before you earn enough coins, etc)
The controls for 17 were unpredictable and unresponsive. The ball in 25 seemed to deflect at odd angles that made no sense. Only complaints in an otherwise fun game!
 "Cat God vs Sun King 2"){kind=icon}
 "Me And The Key 2"){kind=icon}
 "Ultimate War"){kind=icon}