How does the warp dimension system work in Galaga 88?
I don't know how to make it happen. Once I played it I warped after stage four, I think, but every other time it's been after about stage eight. I don't know what I did that one time that made me go through the dimension warp early. Is it anything to do with those blue squares that you catch as they drop down the screen after busting some rocks? Or it is to do with something else?