Sazh's Story: Heads or Tails?

Sazh's Story: Heads or Tails? is a downloadable extra scenario for Final Fantasy XIII-2. It follows Sazh Katzroy as he is led to the casino Serendipity whilst trying to find his son, Dajh.

It was released in the United States and Japan on February 28th 2012, and a day later in the United Kingdom and Europe, for both the PlayStation Network and the Xbox Live Marketplace. It also is included in the Japanese re-release version of the game, Final Fantasy XIII-2: Digital Contents Selection and the Microsoft Windows port.

Gameplay
The gameplay of Heads or Tails? does not feature any combat whatsoever, and is entirely focused on casino games in Serendipity. Players must earn Fortune Medals by winning at the games and can receive bonus medals by performing winning streaks. Poker returns from the base game, alongside a new game called Chronobind. Slot machines are also available to be played, but Fortune Medals cannot be earned using them. The episode's story concludes once 30 Fortune Medals are given to the casino's owner.

There is also a sidequest in the episode, wherein Sazh can encounter Chocolina who promises to reveal her identity to him if he can find all the lost chocobo chicks scattered around Serendipity.

Upon completing the episode, a monster crystal containing Sazh is received and he can be used as a Paradigm Pack ally in the main game.

Story
While making a routine flight in their airship, Sazh and Dajh were sucked into a vortex caused by a paradox. The two were separated while floating through the Historia Crux. Sazh searches for Dajh and finds himself in Serendipity, where it's owner explains to Sazh that he and his son are between life and death. He describes the situation by comparing it to the middle of a coin flip, where the coin has landed on neither heads or tails. The owner then reveals that Sazh must gamble and win the future he wishes to see, one where he will be reunited with Dajh.

After Sazh has amassed 30 Fortune Medals, he speaks again to the owner of the casino. The owner tells Sazh that he has collected enough Fortune Medals to change the rules of spacetime and have the world conform to his desires. Sazh is then reunited with his son. The owner then explains that the universe's timeline is being distorted. The world's future has been determined and the possibility of change has disappeared. He demonstrates this by dropping many coins onto a casino table, all of which land on tails. Sazh demands the owner send him somewhere he can make a difference, in order to protect the future for his son. The owner opens a gate to Academia 500 AF where Sazh and Dajh assist Serah and Noel in the climax of the main story.