The Final Fantasy X/X-2 HD Remaster on PS Vita was a technical marvel at the time of its release, featuring improved graphics and new features. The ROM for the game was created using a combination of automated and manual tools, and the D Work process was used to optimize the game's data for the PS Vita's hardware. The game's developers used a range of techniques, including data compression, texture optimization, and code optimization, to ensure that the game ran smoothly on the PS Vita's hardware.