In vanilla Fallout 3 and New Vegas you can dismember people with a grenade, in Skyrim you can routinely impale or decapitate people, both games allow you to set people on fire: yet the nude mods for those games are considered "adult content".
So yeah, if someone can't handle the idea that they might see Geralt of Rivia's penis, maybe they should only play games rated E.
So yeah, if someone can't handle the idea that they might see Geralt of Rivia's penis, maybe they should only play games rated E.