Hello how may I help you? I have a question about the rules of a child's game Sure, what game is your question about? How do you decide the person who's it in a game of tag I can help you with that. In the game of tag, the first person to ask who's 'it', is 'it'. Is that really it? Yes. Anything else I can help you with? No that's it you've been very helpful thank you! Enjoy the game! I will heading outside to play with the kids now! Have fun!