Nice graphics, dodgy sound. Weird motive/perspective. Religion isn't the most *exciting* aspects to base flash moveis on. That being said, it looked okay.
A modest animation, not too funny, and not accurate at all according to what the Bible says.
Noah was never described as perfect, he was described as obedient, which meant that he may have gotten drunk (after the flood, not before), but he was repentant and obedient.
A 3 year old, no matter how innocent, would not have been taken onto the ark, not because of God, but because their parents would have kept them from doing so (maybe make an animation about that. No? Wouldn't rile people up as much, would it? That's where the strength of this animation comes from).
Also, your depiction of Hell (or, more accurately, Hades) is misleading, considering that is a pagan belief and introduced by Catholism who wanted to integrate their pagan beliefs when Rome became a Christian empire.
Hell (the lake of fire) is better depicted as destruction of sin and putting evil people out of their misery. Try seeing the "reality" in the Bible.
Jesus referred to Hellfire as well dipcrap. Also, Noah was thought of as righteous. If God knew that in the future every single child on Earth was going to be evil then he also knew that Noah was an old drunk bastard that likes to have sex with own daughters.