Destructoid: In terms of the entire package, the PS4 version is the exact same compilation as the original remaster release. The international versions of both base games, Eternal Calm, Last Mission, and the super weird audio drama are all here. Nothing in terms of gameplay content was added or removed. However, there appears to be an alteration or a major bug affecting FFX's random number generation.
People even more keen than myself on FFX have noticed the RNG system is completely broken in the PS4 version. Random encounters and events are supposed to be, well, random. However, this is no longer the case in this version. Encounters always occur when they are supposed to, they will always have the same enemies, and the battles will always play out exactly the same way. No matter how many times the game is reset, the occurrence and outcome of encounters or events that involve the RNG system are set in stone.