It was originally released for the Family Computer Disk System (FDS) in Japan in 1986, and later for the Nintendo Entertainment System in North America in late 1987, making it one of the few games in the series to have a release outside of Japan.
[1] As with Konami's other FDS titles, Castlevania and Bio Miracle Bokutte Upa, it was later re-released in 1993 as a standard Famicom game with some minor changes.
The controls remain the same between the two styles of gameplay, with the only difference being that in the side-scrolling segments, the A button shoots hearts over the ship instead of dropping bombs into the ground like the vertical-scrolling segments, which helps the player keep the power-up bells afloat in the side-scrolling stages.
The player's primary power-up items are once again bells that uncovered by shooting floating clouds throughout the stages.
If two players are playing the game, they can align their ship together to turn their gun into a ripple laser.