The moaners about what 'the UK is becoming' annoy me. This level of background offence has ALWAYS been there - it's just now popular to pay attention to it because doing so furthers certain political agendas (and I mean both hyper-sensitivity to prejudicing material, and the perception that we are somehow becoming a land of free censorship), and because the internet amplifies the voices of everyone, and usually the people that scream the loudest are the ones that are upset about something, whether a good cause or not. Maybe people aren't used to having to fight their political corner, but anyone that has been, for example, watching LGBT rights very slowly turn the corner is not the kind of person that is surprised when people would like to censor them.
When it comes to 'offence' you have to say 'so what?' and just like with any other arbitrary demand by customers or a community, decide if it's worth changing your course on the numbers alone; holding out for universal satisfaction is always a fool's errand. Offence is worthless by itself because context is everything.
I'm glad someone mentioned that 'Big Dick' custom table because that's a good example where the imagery is young-age-inappropriate in almost any context and would need to be kept to 18+ areas. But even for that game I'm not sure I could give a toss whether it offended a grown adult.
For Playboy there's nothing on there that goes beyond what is already publicly acceptable to wear at a beach, and the name 'Playboy' doesn't mean anything without prior knowledge, and the same prior knowledge means that they can also read up on everything surrounding the mag (or Hugh Hefner) and decide for themselves that way. In Flip Out's case, it's there because it's a pinball game, so it's not just as if it's at Butlins or something. Context.
Replace the game because it's using up space that could be better used by a better game, not because a parent is too lazy to educate their kids on the context of things in the world.
P.S. Really speaking, this is the product of nobody taking us tech experts seriously when it came to the subject of online privacy and your rights online - now people are acting surprised when they keep forgetting that having stuff online means you cannot control the context in which it is perceived. A far cry from a baudy joke amongst likeminded friends that understand that your personal politics aren't the source of your dark humour.