A Whore New Ball Game is a netorase visual novel about prostitution played from either just the husband's or both the husband's and wife's perspective.
You own an electronics store with your wife, but competition from the bigger chain store nearby and the internet are hurting your business so much a visit from a customer has become a rarity. A visit from a rich customer ends up giving you the idea to make some money to pay off your debt: invite people over to have sex with your wife for money.