Old Gameplay, New Story
The first Bioshock games were dark, mysterious, and made you feel scared and claustrophobic. This one mostly involves running from house to house during the day in a linear fashion. The best part of this installment is the unique storyline, which unfolds rapidly as the gameplay becomes more challenging towards the end.
Still, it's as if the game's budget went towards writers instead of design because you do care for Elizabeth and want to help her. And the sarcastic idealism really hits you in the face and makes you think hard about your government, the communities around you, and reality in general, as you come to find out. For those points, it's still worth playing.