Viper M1

Viper M1 is an H game in the Hyper Viper Animation series for the PC released in 1998. It consists of three separate entries.

My Mothers
In My Mothers, the player assumes the role of Mika, a young Japanese student who fights the forces of evil with the help of a sex-powered suit, due to the abduction of her boyfriend at the start of the game.

Green Boy
In Green Boy, Natane, who along with her older sisters, Kazumi and Namiki, run a flower shop. One day, a mysterious man arrives and sells the trio a seed in which a male humanoid plant emerges. They then plan on using him to gratify their sexual needs.

The May Works
Finally, in The May Works two rival alien invaders compete to turn Maki, a young female student, into a galactic incubator.