In addition to the three different rape locations that the player had access to in the story mode, three new locations become available: a hotel room, an alley and the subway train itself. Here, the player can select which character they wish to rape, and where this character should be raped. Once the 'story' is done the player gains access to free play mode. Yuuko's location is in the park, Manaka gets raped in a public bathroom and Aoi in her bedroom. The location of the rape depends on the character being raped. The third and final phase of every scene is the actual rape scene. Once the victim becomes aroused against her will, the train will conveniently stop, and the next phase of the game begins. Once on the train, the assault begins, with a traditional Japanese train groping. In this first phase one of the few things you can do is pray to the gods for a quick gust of wind that will blow up the victim's skirt, exposing her panties. The games begins with the player following their victim at the train station. RapeLay's gameplay is divided into three main parts: Your wealthy parents bribe the police into letting you go, so you decide that as punishment for her wholly lawful act, you will rape Aoi, as well as her mother and younger sister. The main character is a sexual predator who attempts to grope a teenage girl named Aoi Kiryuu, only to wind up arrested when she screams bloody murder.

The player takes the role of a rapist who stalks a family consisting of three young women, raping them repeatedly until their will breaks and they become his slaves. RapeLay is a 3D rape simulator by Illusion Soft, makers of the Artificial Girl series.

Rapeplay game