I'm a real big fan of Ninja Flash Games, but this one is by far the best one I have ever played! I'm sure you will agree that this one beats all because you can go invisible, swing from building to building and even wall jump!
I have been playing both of the games lots of times so here it is. This game the "Final Ninja" was the first of the games to be released and after that came the "Final Ninja Zero". But "Final Ninja Zero" acting is 40 years before this "Final Ninja" So the sequel is actually going on before the first game... I know it sounds weird but thats how it is:)