Okay, I don't understand the grade system at all. It almost seems impossible to get higher than C+. Also, some of these games can be unfair, for example, the dog biscuit one. It's fine until they introduce the moving blue blocks. You can easily go to the exact position it tells you to and the blocks move in a way that ensures you're not gonna get that bone. That's pure evil. Also, after a while, yeah, it does get repetative as you'll find yourself playing the same games constantly. It's good for kids, but it's almost insulting to one's intellect, especially with the grade system.