Steam-Heart's

Steam-Heart's is a 1994 vertically scrolling shooter and eroge developed by Giga and published by TGL. The story follows two siblings as they fight off a virus that is possessing the people in their world. The game features shooter gameplay paired with ample erotic cutscenes with scantily clad women. Steam-Heart's was initially released on PC-98 personal computers on March 15, 1994; a version for the PC Engine Super CD-ROM² System was released in 1996 followed by another for the Sega Saturn in 1998, all of which were for the Japanese market. Critics generally found the gameplay to be average, with the erotic content being the sole distinguishing feature.