Enormously unfunny
All you have to do is put a bunch of Nintendo characters in your flash and you've got an instant Top 50. Oh, and some boobs.
So, for some constructive criticism, well, there isn't much I can say that is actually constructive. Other than the flash is completely unfunny. Nothing was funny. None of the premises of the jokes were good, and the jokes were poorly executed anyway. Also, a lot of these jokes have been done before. Many times. So, to everyone that was involved in this flash, the best advice I can give is to stay away from comedy. Very far away. Just stick to action or whatever.
The animations were okay. I have no complaints other than how short and simple they were, but this is a collab so that is excused. However, the sheer unfunniness of the flash keeps the score at a 0.
If you guys had thrown in some Linkin Park, this entire flash would have looked like a Jerry Jackson cartoon. Except those are intentionally bad, as a parody of Newgrounds. You guys have no excuse.
I watched the easter eggs. The Mega Man one was . . . clever. That's still not enough to save this flash from a zero, and me from getting this review purged.
You guys (or girls?) should watch the SF Collab. That was genuinely funny. And I don't even like Street Fighter.