Quoted from jlatko:I don't see an answer to this in the rulesheet. What does completing the four rebel alliance switches on the 2 inlanes and 2 outlanes give you? They light up and can be toggled with the flippers, I believe. Thanks
Those are the shots that get the multiplier. There are 3 of them lit at first, but the higher the multiplier, the fewer there are until you get to 1. If they are red, you can move them with the flipper buttons and when green they are "enabled". You use the fire button to switch between red/green, and you can also move them around between balls with the left flipper.
It's one of (if not *the*) the most important mechanics of the game.
EDIT: R2-D2s special ability is that the threshhold for when the multiplier lights drop down to 2 and 1 is raised higher, enabling a bit more flexibility in how they are placed.