Ys: Memories of Celceta makes use of both the PlayStation®Vita system's screen (touchscreen) and rear touch pad to provide many useful features. In addition to navigating menus (which can also be done with buttons), touch functionality has the following effects:
While playing, pinching in and out on the screen allows you to zoom in and out. Zoom in to get a closer look at specific details in the environment, or zoom out to take in more of the scenery or concentrate on a larger number of enemies at once.
Many puzzles throughout the land of Celceta will require clever interactions with the screen to solve.
By pinching in or pinching out on the rear touch pad, players can switch between two AI settings: Aggressive (party members will attack enemies without player input) or Defensive (party members will focus on avoiding enemy attacks).