First, let me say that I haven't looked at this game yet.
Casual Mania.......I see it as a bunch of casual (A.K.A. noob) games where the word "mania" is used as a synonym for compilation.
That being said, it will have mostly simple games, like puzzle games or very basic gameplay type games in it. While it might have a couple decent games that non-casual gamers might like, it probably mostly sucks for the more hardcore gamer.
Thing is, I'll probably never bother putting this on my card to check out, so I'll never know for sure. But that's my guess.
Theres' an hidden object game, a bejeweled like, a diner dash like and a zuma like and that's all. That's not very much for a "mania".
i've not played the other games apart the hidden object one but the realisation is OK for this one , it's what you can expect from this kind of games i guess. (yeah i'm a dumbass casual sucker for the puzzle/HO genre