Feel like letting off some steam? All these little free online games can help! All you have to do is choose one of the boxing games below to have a little fight or match. Set in a real-life boxing ring or any other world... Dress up as a boxing champion, take down a celebrity or a jumping kangaroo... the choice is yours! Use your keyboard and mouse to string together uppercuts, left punches and right punches until the final knockout! The aim is to knock your opponent out with the fastest, strongest punches possible.