 In the world of Final Fantasy X and its sequel , many supernatural elements influence events in the fictional world of Spira , defining the life of the planet 's inhabitants . Magic , spiritual energy , and the power of memories are heavily intertwined , and their effects manifest in a number of situations , including sporting events , religious practices , technology , and even in some of the native wildlife of the planet . The most popular pastime is Blitzball . The depiction of Sin as a " existence that agonizes the world " and as a " disaster with form " plays an important role in Spira 's everyday life throughout Final Fantasy X. In Final Fantasy X @-@ 2 , the population of Spira pursues additional leisures including attending concerts and a coin @-@ collecting fad called Sphere Break . 
