It depends on the area you playing in.
Well first off, you get a raquet ball or tennis ball. Set up 2 boundrys on a wall or if you have a wall with a few sides to play on the game gets funner. But if you on a flat wall, pick the order of the players. 1st player serves, you have to hit it on the ground, make it hit the wall and the next person can either hit it right down to the ground so it hits the wall or wait for it to bounce once then hit it, then next person hit and so on. If you miss or hit it out you get a letter. If you hit the ball and it lands right on the crack between the wall and ground you chinked it, you can either take a letter or get pegged by everyone playing. Getting pegged, the player getting pegged goes up against the wall and eveyrone else goes to like a crack in the ground like atleast 10 feet away and everyone gets one peg at him (tuck you ball up haha). If you spell out the word chink you get pegged and your out.
I have some friends up in another neighborhood that i play with. They have a wall that has 3 sides. If you bounce the ball of 2 walls in one hit the person hitting the ball can let it bounce on the ground twice before they hit it, if it hits 3 walls you have 3 bounces and so on. They like to play if you get hit with the ball (somone can hit you with it on purpose) you can take a letter or get pegged. Also if the ball is far back from the wall they have a rule where you can hit the ball up in the air once then hit it so you have better chance at getting it back to the wall.
Its a fun ass game if you know what your doing.