Best Xbox Games for Man

ADAM gave Rapture's scientists the ability to alter the human genome and ultimately create what are known as "plasmids" - biophysical enhancements that give their users superhuman abilities.

You will be killing other seemingly innocent humans.

But, like so many utopias, things went horribly wrong, and Rapture is now rotting underwater, inhabited by the last of its former citizens, who have modified their genetic codes so much as to be barely human.

These horrors of lost humanity are called "Splicers" and it is as much what they believe that makes them monsters as what they look like.