Interestingly, sales of FIFA titles are cyclical, as the sales increase in those years coinciding with the Soccer World Cup (FIFA World Cup), or UEFA EURO Cup. (See: Electronic Arts: Why FIFA sales growth will probably slow down this year) According to Trefis estimates, FIFA unit sales have almost tripled from 6.4 million units sold in 2010 to roughly 18.7 million units sold in 2014. In our prior article, we discussed the probable reasons for slowing FIFA sales this year.