Sitting Sex — This game has scenes where characters use the sitting position during a sexual intercourse scene. During the sitting position, The penetrating partner sits on an area surface, legs outstretched. The receiving partner sits on top back towards to the penetrating partner.
Sixty-nine — Contains scenes in which two (or more) characters perform mutual oral sex on each other. Check the related Wikipedia entry for details.
size difference — Sex act where one of the partners is considerably larger than the other
Skull-fucking — This visual novel contains at least one scene involving skull-fucking. Skullfucking is a dark sexual act involving the penetration of head (skull) cavities except for the mouth. Among those cavities we include: eye sockets, nose holes, ears but also brain through a wound or neck if head is chopped off. In lighter cases, the act might not end in the victim's death. Tentacles or other appendages.
Slapstick — Slapstick is a type of comedy involving exaggerated violence and activities which may exceed the boundaries of common sense.
Slasher — A subgenre of horror that emerged in the mid to late 1970s with films like Black Christmas, Halloween & The Texas Chain Saw Massacre. The general plot to all slashers involves a murderer stalking and killing a group of people. Common tropes seen in most slashers include explicit gore, female nudity, and having a "Final Girl" character.