Well, whether or not a game is good is entirely subjective. But aside from that, it takes a long time for most non-enthusiasts to recognize a brilliant game for what it is. The things that enthusiasts value in games are a result of having played so many games. Casuals need to be pushed outside of their comfort zone. Most adult gamers wouldn't touch Mario with a ten foot pole because according to them it's a kids franchise. And even if you get them to play it they still won't like it, because they "don't like" platformers. It isn't until they finally finish a good Mario game, sit on it for a few months, and then suddenly realize on their own how good it was. But most casuals will never get that far.
Anyway, most people just aren't patient or open enough to give good games an honest try. And if they are chances are they're already an enthusiast. So don't bother.







