One person is it. They have to chase. If you get tagged, you are frozen. Someone can unfreeze you, and you can run again. If everyone get's frozen, start a new game.
Someone stands across the yard, with their back facing, and yells green light.
Then the person yells red light everyone stops. Repeat until someone wins. Someone is it. They are blind folded. They turn in a circle 5 times counting as they do it.