You can put on your black belt with this small but fun new ninja game called Ninja Assault made by Hop
Comments from the author:Ninja Action! Fight against the computer in single-player or battle a friend(or enemy) in two-player mode! Sorry there's only one arena, I was going to make more but I got really bored and thought it may be better to release this before I abandon it. Click here to download the game and read its reviews.