Big thanks for DcQua :].
1) First you need to download this file. Inside is 4 files and apk file for Xperia Play Games Launcher.
2) Now via Root Explorer put playstationcertified.jar and xperiaplaycertified.jar to system/framework, and files com.sony.android.playstationcertified and com.sonyericsson.android.xperiaplaycertified to system/etc/permissions.
3) Reboot phone.
4) Install .apk and fell free to playing new launcher .
*Info#1 - Tested on 2.3.3 ROMs, don't know if this work on other.*
*Info#2 - It can improve performance of ROM and free RAM a little, that's beacuse of some comends/scripts. Cheers.*
Mirror of file