You've redeemed yourself from UNS 2 atleast...
Well, first of all I didnt realise that UNS 2 was going to be continued, even though that doesn't mean UNS 2 was good...
But, this installation was better I have to say, (mainly because of the absence of that awful song from the previous one).
It's good to see that this focused more on the goofy, comical action, as the first one did - although I have to say that the "Katana in the ass" Pun did get tiresome and irritating as it quickly became the whole basis of the Flash.
What I found funniest about this installment was the voice acting, which for a while had me grinning.
The parody stylishness, the relativly good music and the superb 3D rendered graphics were all there too Im pleased to say.
There is something about UNS nagging me though; The fact that no matter how many people challenge you with their invented Ninjas, I think that YOURS will always win because you are indeed the creator, and that no matter how many episodes of this you make, we will always know before watching whose Ninja will come out on top.
I also think that although your idea about having peoples' made up Ninjas fight to the death over Flash is a clever one, I can't help but think that it's never really going to take off and that you would do better putting your animation skills towards more appealing Flash creations.
I couldn't decide werther to give this a 2 or a 3, but finally I decided on:
3/5