Erogenous Zones
Era games usually have somewhere between four to six erogenous zones that can be stimulated and leveled up per character, usually called CVAB, for the clitoris, vagina, anus, and breasts. Some games also consider the mouth as another zone, called M. Other games will also allow the urethra to be stimulated, marked as U
Clitoris
Often the easiest part to stimulate on a character, and is present in all Era games
Vagina
Present in only female characters and hermaphrodites. Present in all Era games
Anus
Another hole that can be fucked. Often needs prior experience with caressing before penetration can be done. Present in all Era games
Breasts
Nipples and the big mounds on a character's chest. Present in all Era games
Mouth
Stimulation on a character's mouth. Present in EraTohoK and EraTohoTW based games
Urethra
Another hole that can be fucked. Often needs prior experience with caressing before penetration can be done. Present in EraTohoK