Night Life

Night Life (ナイトライフ) is an erotic simulation game that is part of Koei's adult label, the Strawberry Porno series. The game was touted as an educational tool by the company to help couples enhance their sex life with one another.

Gameplay
Players are given a limited set of options to tinker with before initiating the virtual intercourse phase of the game. These options range from determining the date of a woman's period (thus serving as a rhythm method calculator) to deciding on which sexual positions to include and how much time should be allotted for each one.

The resulting sexual intercourse is then displayed on the screen with a timer via "Let's Fuck!!" option which outlines the graphics in white. A sex diary option is also available for players to record their gameplay experiences.