Point of view is probably the most difficult to identify in works with no clear narrator, and thus no obvious shaping viewpoint. However, Final Fantasy X is still a tale being told by humans, and certain decisions in point of view do shape our understanding of the plot.
For instance, it would be a very different story if our viewpoint character were anyone but Tidus. He alone amongst the main party of adventurers is ignorant of the consequences of Yuna’s decision, and so only by following him do we get the story’s climax at his discovery of the truth. If the story centered around, for example, the veteran fighter Auron, who previously guarded Yuna’s father on his quest, things would be very different—he has simply seen it all before. Both the emotional impact of Yuna’s revelation and the sense of wonder Tidus experiences upon seeing each new country for the first time would be lost.
Another use of viewpoint in Final Fantasy X comes into play as a result of the story actually being told in medias res: the game begins as Tidus and his companions sit around a fire and discuss what has already happened to them, somewhat like the Odyssey’s structure of a returned Odysseus telling stories of his travails to his hosts before he finally takes action. Coming as he does from a life of relative comfort and safety, when Tidus finds himself in Spira at the beginning of the game, he comes across as bewildered, headstrong, and a little incompetent. Were the reassuring point of view of the more hardened Tidus not already established at the start of the game, it is possible that players would reject him as a hero, much as they largely rejected the not-immediately-heroic Squall Leonhart in a previous chapter of the Final Fantasy series.