How do I endlessly scroll verticaly?

I'm making a game where blocks fall from the top of the screen and you have to avoid them and climb them to get as high up as you can, but since i dont want to make a layout with like dimensions of 1280,99999999 XD i need to do the endless runner type thing and have the objects move down while the player stays in the same 1280,720 area. but how do i make it so when the player nears the top of the screen, it moves all the blocks down? this is hard to explain XD does anyone know what i mean?

Not really need to do this but I'd like to know how to do it as well, might come handy.

Good question.

Did you see the infinite jumping example?

Could you tell what about that example doesn't meet your needs?

Did you see the infinite jumping example?

Could you tell what about that example doesn't meet your needs?

Mainly the issue is that the boxes have physics, so i need a way for the new boxes to not start falling when the ones under them get deleted.