It's Mastercard's world; we just live in it. That's my understanding based on a recent communiqué from Valve to PC Gamer, which confirmed that, yup, the company sure did recently remove a whole spate of adult games from its storefront because it made payment processors upset.

Valve is tightening its guidelines around 'adult only' content to satisfy rules set by Steam's payment processing partners, with dozens of sexually explicit games removed from the platform throughout the week.

Valve has introduced new - and worryingly vague - guidelines aimed at the adult-only game development community, forbidding content that may "violate the rules and standards" set by credit card companies,