Bringing back Advanced Ninja for the next Classic Flash game on Trickfist.com. There are 2 other advanced ninja games, but they don't stack up to the original.
Check this sequel demo out:
Advanced Ninja 2 By Sam Clifton. It really captures the game-play of the first. I am not sure what the other 2 and 3 sequels are about.
These sequels are not as good, and it even seems like they were done by someone else. Supa monkey doesn't even seem to claim them on his sites.
Not by the same people but really fun and similar gameplay: Double Wires
Advanced Ninja 4 Preview
Advanced Ninja 4 Level Editor
What is looks like is that advanced ninja 3 is the last one. If you go here and read the comments (I know the screenshot looks awesome). Anyways, it looks like he can't seem to finish the new game because it is too big and he losses interest quickly. He may never finish it. I say, give him words of encouragement. Advanced Nina is a great game.