I play Knock Out at recess. It is a basketball game that my friends and I play at recess. You have to have two balls to play Knock Out and try to get each other out. Only the second person can get the first person out. But if the first person passes it to the person behind you, gets it first, you're out.
You can play as many outs as you want. The best amount of outs is 3 or 4. You have to wait for the first person until you shoot. Then you can shoot. Knock Out is a game to have fun and play fair.