Aya is a secret racer in Chocobo Racing. She can be unlocked once the player completes story mode seven times, and she can be selected by holding the L1 and L2 buttons over Squall on the character select screen. Racing in her NYPD squad car, Aya possesses average speed with excellent turning and controls.
Aya Brea makes an appearance in the Final Fantasy Trading Card Game as a primary promotional card.
Conversely, Aya can also wear Lightning's Final Fantasy XIII attire, sans cape, as an alternate outfit in The 3rd Birthday, by completing the game 30 times, or by performing tasks on the Square site. Just like any of her other outfits in The 3rd Birthday, the outfit can be torn up as Aya takes damage; Lightning's l'Cie marking can be revealed as more damage is done to her outfit. In addition to dressing up like Lightning, in the Japanese version, the outfit will also change her voice to sound like Lightning.