[quote="Doppel":jsvfijri]OH MY SWEET HOLY F%#K, bullets... everywhere... thousands...
How in the world anyone can enjoy that? Its simply Avoiding => Waiting => Shootin, repeat untill boss is dead.[/quote:jsvfijri]
It's what's known as a "Bullet Hell" shooter. They're pretty common, especially in the Japanese shmup scene.
Part of the allure is making pretty patterns of bullets with math. Some of them are quite intricate.
Personally, I can't stand them
But then again, I'm not a big fan of shmups in general. But there's a whole lotta people out there who make and play these so they've got their own little hardcore niche.