Perfect Dark Zero is the best example of this phenomenon. Terrible AI, unfair stealth mechanics, and "meh" visuals, yet it garnered pretty excellent scores all around. To this day, I have no idea why.
Also, Wii Sports is basically the Wii's killer app, even one and a half years later. More than anything, it's the game moving so many Wiis off of store shelves. I really don't think it needs changing at all. :)
"'Casual games' are something the 'Game Industry' invented to explain away the Wii success instead of actually listening or looking at what Nintendo did. There is no 'casual strategy' from Nintendo. 'Accessible strategy', yes, but ‘casual gamers’ is just the 'Game Industry''s polite way of saying what they feel: 'retarded gamers'."
-Sean Malstrom
