If I was to recommend any game to a fan of Bullet Hell games, or SHMUP' in general; my first choice would most definetly be Astebreed.
There's something about this game that instantly clicks; and it does so many things right that there are very few flaws if any at all; and below I'm going to tell you everything there is to love about this game.
1. The camera; initially it might feel a bit jarring seeing it pan and zoom at various intervals but the good thing about this is that it does so in a flawless and seamless manner that it never really becomes an issue; there's the standard top/down view, a side-scrolling view and a rather well done third person view which alternate between set sections to really give a bigger impact instead of sticking with just one camera view. It's this concept that makes Astebreed unique and gives it that kick to make it stand out.
2. The graphics; Graphic wise, most Bullet Hell games tend to stick with the 2D format, pixels on a moving, otherwise repeated background yet that isn't the case here. The graphics are some of the best I've seen from an indie game; they're smooth, clean and incredibly crisp and despite all the madness that goes on screen, it doesn't deter you away at all; you can always see where your ship is, and most importantly the backgrounds are eye-dazzling; each one changing from the next although it implements heavy sci-fi elements AKA flying robots of various sizes there's always a new design for each enemy you come across be it big or small although certain enemies are more visually appealing than the rest each of them has something unique to them.
3. The Story: This is, something of a hit and miss but what this game does is actually make a damn good attempt at actually telling a story amidst the carnage. Essentially, you are a Rookie pilot sent on a mission to finally end a Galatic war between mankind, and the Filune; a race of alien creatures that; for reasons unknown is hellbent on wiping humans from extinction. I won't go into too much detail, but it's surprising how good the story is even if it's a little cliche. The characters interact with each-other constantly, giving advice or being a general nuisance and the voice acting to go with it is some of the best I've heard; despite the fact that it's in Japanese only. The only flaw to go with this though, is that you can't really pay attention to what the characters are saying, unless you know Japanese; if not you most likely won't have time to pay attention to the subtitles at the bottom left corner amidst all the shooting and dodging you'll be doing, this is just a very minor flaw though.
4. The Music; ♥♥♥♥♥♥ic, is a good term for this. Granted, Bullet Hell games have always had catchy music; whilst not the most memorable Astebreed has a soundtrack that suits perfectly with each stage and boss encounter. There's always a set tone whether it's a more upbeat tone for the initial stage or something more desperate for the stage bosses; the most enjoyable one for me is the entirety of the stage 5 theme, which I personally believe would've suited the final boss better but that's just me.
As of writing this review; I've put plenty of time into this game; despite what the hours say. If I ever want to keep myself occupied and entertained without really getting bored I'll boot up this game and waste a few hours blowing things up like a complete lunatic; and there's nothing wrong with that. This is the sort of game designed to keep you hooked for hours on end, whether you play it casually, or if you're like me prefer to beat all the high scores in the game and top the Leaderboards for bragging rights.
If you've ever got the time, and the money to spare; give this game a try; you most certainly won't regret it.