Matches are 11-a-side, with 10 outfield players who cannot use their hands and 1 goalkeeper who is allowed to catch the ball inside the penalty area. Games are split into two 45-minute halves and the winner is whoever scores more goals than their opponent in the given time. To score, you have to send the ball into your opponent's goal.
The offside rule is what spices things up: you cannot be closer to the goal than the last opposing defender when receiving the ball from your teammates. In order to enjoy a game of football, it is recommended for players to know a few basic skills of football that will help them enjoy the game.