The game features shooter gameplay paired with ample erotic cutscenes with scantily clad women.

The player can also choose from a variety of secondary weapons which vary between the versions of Steam-Heart's, but include fixed turrets, flamethrowers, and satellite ships that hunt down enemies among others.

Two siblings, a male named Blow and a hermaphrodite Falla are immune to the virus and set off to fight it.

[5] The bosses at the end of each stage are mecha piloted by scantily clad women including catgirls.

[8][9] For this release, all the graphics were redrawn, the secondary weapons were weakened or removed altogether, and the two-player mode was pulled.

They felt the game was enjoyable but ultimately found it to be a weaker offering than other shooters on the system such as Gate of Thunder (1992).

He believed the game could not stand up to the likes of Radiant Silvergun and R-Type Delta (both released in 1998), and found the graphics were not much of an improvement over the PC Engine version.

One criticized how the cutscenes would show still images for too long while the voices continued on top, and they compared the game to old eroge for personal computers.

The more receptive reviewer appreciated the erotic themes, and felt the bullet hell gameplay was balanced and enjoyable.

He believed the Saturn version was better than most Raiden games, worse than Dodonpachi and Terra Diver (both 1997), and about on par with Batsugun (1996).