For the USA version. we will get StarBattalion, Asphalt6, TheSims, Tetris, and BruceLee.
For UK. It will be: StarBattalion, Asphalt6, TheSims, Fifa10, and BruceLee.
So USA gets Tetris, UK gets Fifa and the rest are the same.
Source: Sony Ericsson Xperia? PLAY: The first five games | Facebook
Sony Ericsson (SonyEricssonNA) on Twitter
Also the 6th rumored game is a Crash Brandicoot from ps1.