Ok so I used to have this installed on my phone and it worked wonders, I however accidentally uninstalled it, when I went back onto the android market to install it again there is a message saying "Your device is not compatible with this version" Oh and im using the Xperia Play. Any help would be greatly appreciated.

Thanks.

What model / Android version are you using?

I have the Xperia Play also, Model R800at running Android 2.3.3

(edit: you may also want to open a support ticket for this)

Its the R800I and the android version is 2.3.4 thanks I'll check the support ticket.

My problem is the target button doesnt work all other buttons work fine.
Kinda pointless to play on my phone if i cant target.

Depending upon what you are trying to target the target button is probably working just fine. If you are trying to target 'roids, you need to first change the targeting type to Front Object by using a long-press on the button.