GI:In BioShock Infinite, players must be comfortable with the concept of parallel realities. What appears to be a peaceful street could be a war-torn battleground in a different version of the world. A person can be alive in one place, dead in another. Male here, female there – or never even born at all. As hero Booker DeWitt confronted these truths through the abilities of his companion, Elizabeth, I toyed with the same ideas in my own mind. If just a few things had happened differently, how would my life change? Could I be smarter? Richer? Happier? No matter how many parallel realities I ponder, I cannot imagine one in which BioShock Infinite is not among the best games I’ve played.