I saw a film in school around the 1980's. I think it was a scholastic 8 mm movie . It was called "Zero Hour" . It was about a group of kids playing a game "invasion". The main character is a little girl named Ming. It was set in the future. The game takes a twist and ends up being a real alien invasion. The children join forces with the aliens to off their parents . I also believe it is based on a Ray Brayburry short story. Any information on this film would be great.