A free program for Android, by Acuspunsa.
Ninja Kung Fu Fighting is a role-playing arcade game that gives you a chance to become the king of your own ninja world. You can fight and kill the other ninja warriors and take their places. Be prepared to brandish your ultimate weapon — the King of Blade— and showcase your most powerful ninjutsu to strike fear into your enemies' hearts. Remember, the more you kill, the more experience you gain.
As of this writing, Ninja Kung Fu Fighting does not support LAN connection; you can only fight with the computer. You can use various weapons and ninjutsu to defeat your enemies.
