Valve has now provided that, 'Content that may violate the rules and standards set forth by Steam's payment processors and related card networks and banks, or internet network providers, in particular, certain kinds of adult-only content' should not be published on Steam.
Steam implemented a new guideline stating that content violating the standards of payment processors, card networks, or internet providers could lead to game removal. This affects certain adult-only content and has resulted in the ban of games with sexual themes and titles featuring "incest." SteamDB indicates many games were likely pulled following this new rule, tying the removals to the updated guidelines for adult content. Payment processors have historically opposed the use of their services for purchasing adult content, citing concerns over insufficient safeguards against illegal activities.