Hello how may I help you? I'm getting ready to go outside with my son. Do you know the rules of "catch"? According to my information, catch is a game where two or more people choose to toss a ball or another object between them. This is done until one or both parties wishes to quit. Oh so that's the way to play? Yes. One can choose how long, or how many tosses, or any other criteria for ending the game. Okay, What about how far between we should be? That is also up to the participants. If one or more players are inexperienced, a short distance may be desired. if they are more skillful, a longer distance may be more of a challenge. That's a great explanation. Thanks You are welcome. Is there anything else I can help with? Nope, you've been super helpful! Time to go enjoy time with my son!! I hope you both have a great time!