Obtaining new plasmids requires Adam, a substance found in sea slugs, and grown inside the stomachs of young girls. Use of plasmid powers is very similar to how it was in the original game. Providing you’re carrying some fuel, this drill can be spun and used to rip apart roaming splicers – Rapture’s Adam-addicted crazies. Your right hand holds a weapon, which defaults to a devastating drill. Your daddy’s left hand can shoot out electric, fire, ice, and more mutant-like attacks, with one corresponding shoulder button used to cycle through those in your inventory (hold down to bring up a radial menu) and the other to fire. Instead of having to swap between a weapon and a plasmid attack (the game’s genetic enhancing super powers), you can dual wield. Straight away you’ll notice an important change over the original. With a cast of characters, including new ruler of Rapture Sophia Lamb, all trying to stop you, the fight through the run-down corridors deep under the sea won’t be easy. Not wanting to spoil the plot, you’re without your little sister and you’ll do anything to get her back. This time you awake as the very first, the prototype big daddy, and you’re far more agile than you’d imagine. Yes, while the end of the 2007 game let you put on a big daddy suit, it didn’t make you feel like one of Rapture’s little sister protectors. “But I’ve already played as a Big Daddy,” you cry. Thankfully, when it comes to holding your own in a fight, you’re no slouch either. A new threat, in the shape of big sisters – agile, plasmid wielding, screaming death merchants – will have you on your toes, fearing for your life every time you hear one of their terrifying, wall-shaking shrieks. While BioShock 2 doesn’t make you trawl through the same locations, there’s a familiarity here, but with 10 years having passed since the end of the original game, new enemies are on the prowl, there’s a new dictator in town and the big daddies are no longer alone as the top dogs. There’s no doubt that revisiting Rapture isn’t quite as special as seeing the dilapidated underwater city for the first time.

Bioshock 2 plot