Yup. Although once you discovered you could get down to one rock, then lurk in the corner and shoot through the edge of the screen at the little saucer, and zip across when he came out on your side . . . you could rack up a score
Yes! I was usually the high score guy at my arcade, doing that. I would get the 3 highest scores and post:
I liked Glaxian and Galaga, esp. the table-top ones in a bar
In that case, you would enjoy being at my house!