Valve have added a new rule to the Onboarding guide for game developers, noting that payment processors get a say in what stays on Steam.
Newly added rule is:
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.
Diff of the new terms https://github.com/SteamDatabase/SteamworksDocumentation/commit/fddd59b5395cc3c1c74574650dbf5784612d0521
:/ payment processors strike again (slippery slope etc)
Steam is banning porn games!? How will I get my Northernlion Reads Steam Porn Game Reviews content now?
He’d have to stop playing Umamasume for long enough to read steam porn game reviews