I love how this game contrasted so heavily from the previous two in so many ways.
1: Complete opposite environment, except for under the ocean you're above the clouds.
2: Your escort throughout the game is actually useful and takes the effort out of walking around with a young girl companion.
3: Instead of your character being next to silent like in 1&2, Dewitt interacts with people and things so much! Over 20,000 lines of dialogue in this game, around 30% of which is purely shared between Dewitt and Elizabeth.
4: 1&2's plasmids were quite basic in so far as you had generic powers like fire, lightning, telekinesis and were meant to be powers to better one's livelihood but Infinite's "vigors" were so unconventional, they were awesome. Seriously, summoning a murder of crows, creating shock waves along the ground, sooooo cooooool!
5: As opposed to being confined in a big daddy suit with low mobility in 2, you're given the opposite with ultra-mobility thanks to the sky-hook.
But what I loved the most was how Infinite could still capture 1&2's fear of the unknown. In Bioshock 1&2, you feel claustrophobic and paranoid but in Infinite, you don't know what to expect because you're so out of your comfort zone.
Love.This.Game.....