First installed to iOS4 and wouldnt run, just gave a black screen. Then after repeat tries it finally crashed the whole thing and resetted but now its working. The game isnt as great as it looks, the programming is uncalibrated so you cannot easily place objects on the screen. When you start to drag objects around it offsets about 30px from where your finger actually is. Once it gets going its better, but the interface is buggy at best.
jack382 about SG TD