Two lines of kids joining hands, facing each other, about 20-30 feet apart. One line would call:
“Red rover, red rover, send _________ over!”
The named kid, on the other side, would have to run and try to break through anywhere on the calling side’s line (usually the two weakest-looking kids).

If the kid succeeded in breaking through, he/she would pick one child from that line’s squad to bring back to his/her team (usually the strongest/biggest kid). If the kid didn’t bust thru the line, he/she joined that line. The side won (of course, by then everyone was on it!) when no kids were left on the other side. With well-
matched & determined kids, this could take all day!