There are two things that set it apart; first the cartoon look. From the ships, enemies and items to the background; the chibi graphics are actually very nicely done. So I definitely think it was a success in that department. Music was OK, and so the sound FX; definitely above average, at least. The only odd thing is the fact that despite being called "bees" the aircrafts look more like regular airships; but maybe it's their designated name. It stroke me as odd, because I interpreted the twin part in the fact that you can combine them into one for a mega-bee attack of sorts (I guess this could also count as an extra setting apart point:) I don't know what the story is either, none is given (that I remember) But it doesn't matter since this is clearly a straight shoot'em up from startup. Gameplay all around is smooth and enjoyable. And as others of this kind, it starts reasonably easy and gradually progress in difficulty. Luckily you have the second thing that set it apart, which is the bonus power up system; from time to time in clouds, appears these bells that you have to "take" in order to attain the prize it "contains". That's pretty standard; but the really nice thing about it is that you can shoot them before, and by doing so they change colors to indicate the shuffling level of the to be converted item. Which I thought was kind of neat. I have only played the NES port, so I can only tell about that. But I liked it a lot, have a look at it; even if it appears too childish at first glance, because there surely is a whole lot of solid game backing it up underneath it's forced anime look.