My ski team played "loserball" in highschool when it was really cold, but no snow. It was a soccer/rugby/basketball game played on frozen ground with a soccer ball. The refs could change the rules at any whistle play stoppage (goals, penalties, or out of bounds). Coed was key because our coaches would make different rules for boys and girls, like no-hands for girls, or no-feet for boys, or 3 step limits to increase ball movement. An hour of that in 20 degree weather was brutal.