The players who are trying to escape Marco must shout “Polo” every time he / she shouts “Marco. " The only exception is that they don’t have to shout it, obviously, if they’re under the water. If a player above water does not shout “Polo!” and Marco suspects he knows who it is, then he can say, “I know that [player’s name here] didn’t shout Polo!” If the other players agree with him, then that person has been caught, and he has to be the new Marco! The game starts over!
Before you start the game, you should decide whether you can also move outside the pool. Some versions of the game allow for this, while others allow you to be out of the pool as long as one body part always remains in the water. This can make the game even more fun, but you have to make sure not to run outside the pool, which is very dangerous! You can also play the game using the “Fish out of water” rule. Under this rule, if you allow players to be out of the water, then Marco has the right to yell “Fish out of water” at any time. Once he does this, he can open his eyes – if he sees that one player is out of the water, then he is right, and that person is the new “Marco” and the game starts over. If multiple players are out of the water, then Marco has the power to choose whomever he wants to be it!
You can set a rule for what it means for Marco to “tag” someone during the game. Does he have to use his hands to tag someone, or does just touching that person, even if it just means his leg brushes up against the other player, mean that the person has been tagged?
Once someone is tagged, the new person who is “it” can count to ten and start the game all over again. The fun can continue for as long as you want. It’s best played when there’s no one else around – if you’re darting around with your eyes closed and there are strangers around, you are bound to annoy one of them pretty quickly! Have fun playing “blind tag” for as long as you want!