Data install, also known as Install or Batch Download, is a feature in several Final Fantasy titles, mostly for the PSP. The purpose of the feature is to reduce the overall load times of the game by copying certain common data from the game source to the device storage.
A UMD version was only released in Japan. As such, this version has a Data Install option. The data install is 282 megabytes. During the installation a chocobo runs in place as the "Chocobo Theme" plays in the background. For the digital release, the full version can be downloaded to a Memory Stick or Vita Card and does not require a supplemental install.
The data install is 317 megabytes. During the installation a fleet of Baron airships is seen racing across the waters, their advance on the screen illustrating the data installation progress. The background music for the data install is "The Red Wings".
This is currently the only console title to have the feature, which is simply called "Install". There are two options: Full Install, requiring 4837 MB on the console's hard drive, and Quick Install, requiring 3104 MB. The background music for the data install is "Lightning Returns".
There are four data install options, with two for each UMD. 554 or 865 megabytes can be installed for disc 1, while 651 or 1,242 megabytes can be installed for disc 2. The background music for the data install is "Divine Fire". The installation screen features a background of flames, and one by one, the twelve Class Zero members will appear on the screen, with a full group shot appearing at completion. Appearing in this order are Cater, Trey, Deuce, Jack, Queen, King, Sice, Nine, Seven, Cinque, Eight, and Ace.
After data install is selected from the main menu, the player chooses how much data to install onto the Memory Stick: 245, 373, or 528 megabytes. After a choice is made, the data is saved to the Memory Stick over a period of time dependent on how much is being installed. When finished, load times are reduced, as the game loads more data from the Memory Stick rather than the UMD.
The data install screen features a recreation of the opening screen of the Super Nintendo version of Final Fantasy V, with Bartz and Boco riding across the horizon and "Mambo de Chocobo" playing in the background. If L or R is pressed during data install, a moogle's "kupo" or a chocobo's "kweh" is heard, respectively.
Sizes that can be installed are 492, 574, or 814 megabytes.
The data install screen features a recreation of the opening screen of the Super Nintendo version of Final Fantasy VI, with Biggs, Wedge, and Terra Branford traversing a snowy field in Magitek Armor, with the central melody of "Terra" playing in the background, followed by the "Victory Fanfare" when complete.
If L or R is pressed during data install, a chocobo's "kweh" or a moogle's "kupo" is heard, respectively. If the player presses L, R, and ten times each in order, Kefka, Edgar, and Sabin fall and jump up the screen, and Cyan Garamonde runs away in Magitek Armor. Pressing makes Biggs, Wedge, and Terra hop. This can be done repeatedly. This might be done as the player may get bored during installation.
Mobile games are often larger overall than their initial install, and so most of the game's data, including player progress, is stored server-side. However, because mobile users are frequently limited in the amount of data sent and received over carrier networks, most Square Enix mobile games will offer to download (cache) common data elements. Also for this reason, larger games carry a recommendation to download over a wireless network, such as that provided by terrestrial broadband or any public connection (cafe, restaurant, hotel/motel, etc.). Caution should be exercised when these operations take place over unsecured networks, especially where microtransactions can be used.
During startup, a mobile game may launch a comparison operation against the server on which it runs. If the cached data does not match the currently available data, then either the differential data will be downloaded, or the client will request the full game. If a version update is also necessary, then the player should be notified and taken to the appropriate app store to retrieve the updated client.
Batch Download adds updates that are not included with the installation of the app.
Most, if not all, dungeon data is cached on-demand and may be purged automatically after a period of disuse. However, it is also possible to manually purge the cache at any time via the settings menu. A troubleshooting feature, it purges only common elements and does not reset the player's progress. This can free up hundreds of megabytes of device storage, though it requires the game to relaunch to get updated hub screen data.