Rollover (one word)
A small, usually circular, spot on the playfield that may score points when a pinball passes over it.
Roll over (two words) / Turn over
To score more points than the score display can show, such that score goes back to counting from zero.
In the video, Frank causes the score on Mars Trek to roll over by getting the pinball stuck on a rollover.
In the video, Frank causes the score on Mars Trek to turn over.