Abstract
In the massive plot twist at the end of BioShock Infinite, the writers beautifully put forth a hypothesis that individuals might exist in more than one possible world. In philosophy, the idea that an individual can exist in more than one world is called transworld identity. An important rival to transworld identity theory is counterpart theory, the idea that individuals cannot exist in more than one possible world and are therefore “world bound.” Modal realism is the thesis according to which there is an infinite number of possible worlds that really exist in the most robust sense, relative to themselves. The world of Columbia is one possible world. The world of Rapture is another possible world. Both the actualist and the possibilist agree on these claims. Most important to the themes present in BioShock, transworld individuality has profound implications for differing notions of freedom.