[QUOTE=Rexu] How do i make realistic flashlight effect (not useless) for zombie shooting game? I trying to find it but i can't ;/.[/QUOTE]
I have a simple way to do so (though I haven't tried it so it may not work as intended)
Make a layer on top of everything and have a completely black image placed on it. Change the transparency to something you see fit. Then draw the flashlight beam on the same layer and set the blend mode to XOR. That should work and very simple.