it does... 1, perhaps 2, and are pretty big indeed.
the anime its worth if you dont have a mean to get the game, but since you already passed fate route, i assume thats not the case, right?
edit: perhaps you could watch some parts of it after finishing the game, just for the sake of awesomness (Archer vs Berserker ftw)
"We want a game that's going to chop us the second we screw around, or just flatten us at its whim... until we finally beat it. They demand more of us, and we rise to the occasion because we're that good. And that feels good. And that's why we game."
Rus McLaughlin, IGN