What are the rules and regulations for playing goal box soccer?

Goal box soccer, also known as futsal, is played on a smaller field with specific rules. The game is played with five players on each team, including a goalkeeper. The ball is smaller and heavier than a regular soccer ball. Players must stay within the designated goal box area when defending. There are no throw-ins, and the ball must be kicked back into play after it goes out of bounds. Substitutions can be made at any time during the game. Fouls result in free kicks or penalty kicks, depending on the severity. The game is fast-paced and emphasizes skill and teamwork.