From Final Fantasy Wiki

The Play Plan is a setting for Dissidia Final Fantasy. When the player first begins the game, they are asked if they are a "Casual", "Average", or "Hardcore" gamer. Their choice will effect the Chocobo in the character's status screen. To change the Play Plan again, enter any character's customization screen and press the "R" shoulder button.

After completing all Destiny Odysseys, the player will be able to purchase the "Grind-lover" and the "Treasure Hunter" play plans from the PP Catalog, which feature a Black chocobo (using the Final Fantasy V sprite) and a Fat Chocobo, respectively.

The chocobo takes a step forward every time the player battles, even if they lost. Once the date changes, the chocobo stops, returns to the starting point and sleeps. While the chocobo is moving it will encounter Treasure Chests that give chocobo accessories to the player. These chocobo accessories increase the EXP gained but have a chance of breaking after battle while equipped. The value of the chocobo accessories are higher for longer Play Plans.

The EXP Bonus multiplier is proportional to the chocobo's altitude. When a chocobo finds a Gysahl Green, it will grant an EXP Bonus. When a chocobo sings a note, it means an EXP Bonus is in effect despite not finding Gysahl Greens. It happens when the chocobo is flying and hits a Lucky Bonus, though it occurs randomly. The more the player battles, the higher the chance of gaining an EXP bonus.

The Grind-lover Play Plan is unique in that it does not find Treasure Chests, but finds Gysahl Greens and gets EXP Bonuses quite often. Inversely, the Treasure Hunter Play Plan doesn't get EXP Bonuses or Gysahl Greens but finds Treasure Chests very often.

Accomplishments are unlocked by completing the Casual, Average, and Hardcore Play Plans. Other accomplishments are obtained by getting a 50% and 100% Luck Rate.