The higher the level of this gauge the less that’s left to the imagination and the closer a game gets to being just straight up interactive porn. If you prefer to fill in the blanks however, then floating between levels 1 and 2 is probably a good place to start.
Little to no nudity, the act is implied at most.
Partial nudity (boobs and butts), the act can be implied or an interactive part, may or may not be the focus, no penetration.
Full nudity, the act is typically an interactive part, may or may not be the focus, penetration, one step down from porn.
The act is the primary focus and nothing is left to the imagination, full nudity, penetration, basically interactive porn.
The closer this gauge gets to 100%, the more likely it is to have explicit and potentially offensive material. This includes any and all kinks, fetishes, sexual violence, and non-consentual sex. If you’d prefer to not get too freaky, staying below 50% could be considered a good comfortable spot.
Romanticized and idealized sex and/or sexual acts, or mildly lewd content and/or dialog.
Any and all things go.