In Final Fantasy VIII, when you fail to prevent missiles from blowing Balamb Garden into oblivion, you get a cinematic cutscene before a game over screen.

I think this is one of the most interesting concepts that games in general don't really use. It may be that, in general, creators don't want to invest in creating a scene that, ideally, you're not supposed to see.

Other games in the series have this type of thing as well, such as the Episode Ignis DLC of Final Fantasy XV and to some level, the paradox endings in Final Fantasy XIII-2. Although in some cases you're rewarded for going down the path of a "what could have been" scenario.

What epic scene from any Final Fantasy game would you give an "alternate ending" where you get a cutscene and game over screen?