In English, there are two commonly used terms to describe the kind of scrolling shooters (shoot-em-ups, STGs... there's a lot of fanciful names for them) where you are literally overwhelmed by bullet count. And they're a large enough genre that it does help to divide them from the general shoot-em-ups.
- Bullet Hell
- Curtain Fire
With synonyms, we can make it that both tags are applied, so that's not the concern. I'd like to see what everyone thinks would be the better choice for the parent tag. And we do have at least one question about this kind of game, so this isn't even pre-emptitive.