These game includes at least one scene of vaginal, anal or oral penetration, where the inserted object(s) or body part(s) is/are significantly larger than the penetrated orifice, often impossibly stretching and bulging the stomach/throat.

Examples include penetration with an oversized/monster's penis, larger in diameter than the girl's thigh, multiple vibrators or large tentacles at once, normal man having sex with a mini-girl (in case of Macrophilia) or putting both hands elbows deep into the vagina.