This is the most critical part of the keyword. Nintendo Switch cartridges and digital releases are region-locked only in terms of DLC—not playing the game itself. However, the ASI (Asia) release of Final Fantasy X/X-2 HD Remaster is famous for one specific reason: Cartridge configuration.
For the NSP scene, the "ASI Top" release refers to a digital dump of this superior Asian cartridge or eShop version. Because the ASI version treats both games as native data rather than a DLC unlock, the NSP file structure is cleaner and less prone to title-key errors.
Unlike some games where ASI versions require region-specific DLC, FFX/X-2 has no paid DLC. Everything is on the NSP. The "TOP" release ensures that both games are unlocked from the start.
If you are looking to play Final Fantasy X/X-2 on a modded Switch, here is why you should specifically search for the "ASI Top" release rather than a generic USA NSP.
Final Fantasy X HD Remaster
Final Fantasy X-2 HD Remaster
Overall for the collection: Great value—two full RPGs, 100+ hours, but X-2’s lighter story can feel jarring after X’s emotional ending.
You are looking for the .nsp file specifically tagged with ASI (Asian Region).
UA) version is often simpler to manage, but the ASI version works perfectly fine if English is selected during the game start.