Ninja fighting game free online to play, sword action games for PC, ninja fighting game for teens. Play Hong Kong Ninja - Use your ninja skills to defeat the criminals!. Play Ninja Fight for free on CrazyGames. It is one of our best Action games!. Find out more. Join the dark side of the Ninjas and slay your enemies by using deadly Shurikens and upgrades. You have only 1 minute unless you slot wendelstein upgrades. A cool Tower Defense game! Control your ninja using the Arrow Keys.