Xperia Play

You already known the Sony Xperia Play, right?
Yes, this phone are designed to playing games. This phone are similiar to the Sony PSP Go, with slider controller

The Xperia Play can run PS1 games with a higher resolution.
Sony have secured some big-name games for the Sony Ericsson Xperia Play. The examples are : Battlefield, Dead Space, Guitar Hero, Assassin’s Creed, Galaxy on Fire 2 and Dungeon Defender: Wave Two ,etc
And you can buy these games in the PlayStation Store.
Some of the games are excelusive and only for the Xperia Play.

Here are the controls interface:

And this is the video of some games that will be available for this phone

GSMarena