I've had comments like this deleted before, so let me be clear. I am discussing why this author might want to clarify to their audience what the content of their game is, by extrapolating on the related kinks/interests of the potential audience as it relates to this game's content. I am not trying to shame anyone or argue with anyone.
To be clear, I myself am a fan of futanari. Trans has grown on me as well, and I see them as two distinct things both in form and narrative impact. I was intrigued by the concept of hermaphrodism philosophically well before I became a fan of it as a porn genre. What I mean by romanticised is that in real life people don't get two fully formed sets of working sex organs or have a fully feminine appearance aside from a large penis (EDIT: I am talking about futa here, not trans women. Obviously, some people do have feminine facial features and a penis. I'm talking about the common style of the futa genre as compared to real cases of intersexed persons. Please do not take this as a dig or attack on trans women or intersexed people. My whole point is that they are two different things, and that porn tends to exaggerate features). It's generally not fun at all to be born intersexed. So the depiction of futas in porn, typically big boobs and a big dick with a fully functional vagina et all, while looking completely female, that's "romanticised," not realistic, in the same way that most porn is not realistic.
So, as it regards various people's reasons for liking or not liking things, I've heard some people say they don't mind the penis, but if the story is otherwise "realistic" (i.e. not medieval fantasy, sci-fi, horror, etc) they don't like the less realistic futa, because it interferes with their suspension of disbelief. Personally, I don't understand the attachment to "realism" in fiction to begin with (let alone in adult fiction/porn), but that is how some people feel about it. If an author is giving thought to marketing and target audience, then it's something worth being aware of. If an author is doing their own thing regardless of how people may react, then it as at least worth being clear, to avoid drawing excess attention from people who may gripe and troll about it.