What is the favorite game of Vincent and his brother?

Vincent and his brother, in the film GATTACA, have a favorite game that they play which is referred to as "chicken." This game symbolizes a test of courage and determination, reflecting the underlying themes of the film related to risk-taking and challenging societal expectations. The game is not only amusing for them but also serves as a metaphor for Vincent's journey against the genetic determinism that society imposes. While they could engage in more traditional games like chess or poker, "chicken" distinctly resonates with the film's exploration of what it means to defy odds and assert one’s agency against predetermined paths. This highlights the film’s emphasis on personal choice and the human spirit, which are central to Vincent's character arc.