The thing about 2D styled games is that you either love it, or you hate it. When games starting becoming more powerful developers starting losing their minds by making games more realistic and more 3D, adding textures and details that will make a 2 year old cry. 3D was a huge step in gaming and most developers decided to take this route. Some games however pushed against the grain and instead decide to make a 2D game instead.
This is the Top Ten Modern 2D Games