You can use five pieces of scratchpaper (front-and-back) for the test. That -- and a combination of their annotation tools -- has to be used as a substitute.
You're required to show the proctor the scratchpaper front and back in the beginning anyway, so after you show it to them, you'll be fine folding it I'm sure. But shoot LSAC an email/call if you're super concerned!
I think that's just the case in general for the test. For me, I try to keep my "glancing back/re-reading" to a minimum by just getting all the info I need down on the scratchpaper and never looking back at the original stim.
Yeah, do it on paper. It might be somewhat more true to test day conditions to work off the screen using blank scratchpaper rather than actually printing the games. I wouldn’t know what to do with myself without pencil and paper.