I am trying to write a game. That game uses tilt effect, but i don't know how to test it on Iphone Simulator 3.0. I search it on internet, but the result is zero. How can i...?
Short answer: You can't, not directly. You have to use a real device.
Longer answer: You could subclass UIAccelerometer
and do as you like. You could simulate input, or write a client and server pair that sends acceleration information from a real device to your app running in the simulator, or from your Macbook's accelerometer if you fancy waving your laptop around.