This is an adventure game in which players assume the role of a high-school student as he attempts to fend off the advances of possessed female classmates. Players move through levels, fend off female characters, and help several heroines through interactive scenes. These interactive scenes often depict female characters wearing revealing outfits (e.g., lingerie) in suggestive situations (e.g., stuck in windows, arched on the ground, inside locker rooms and bathroom stalls). Players can activate a "Doki-Doki" mode, in which a close-up, 360-degree view of female characters is depicted; players attempt to bring characters (clothed) into a state of euphoria by using a cursor to click on various body parts (e.g., face, legs, chest). Sexual moaning sounds can sometimes be heard.