I've been wanting to make a game with monstergirls that evolved to somehow live in space. You star as a shota freshly awaken from your cyro-chamber fighting of monstergirls in an abandoned spess-ship that wants the shotacock with traps and environmental hazards. So basically, your standard action H-game but reversed genders.
I want it to play like the game Neighbours from Hell but you have to sneak through levels while an ayylien hunt you ala Alien:Isolation. You get an AI/robot partner that acts as your map, objective giver, crafting device, anti-rape machine & encyclopaedia. You unlock mg profiles by fugging while your AI buddy observes FOR SCIENCE!
One of the mgs I thought up is this spess-mermaid in which I found inspiration in pic related.
You would find her on a "space-walk level" where you have to walk outside in an environmental suit. When you encounter her she would be docile but curiously approach you upon finding a curios creature she never saw before. She would try to open your helmet wanting to touch your face to feel your warmth and partly because her mg instincts are kicking in. She succeeds somehow and she brings her face closer to yours and your lips connect with hers. A long moment passes until your AI partner reminds you that you're running out of air. You push her away, she looks dejected but she doesn't give up, she doesn't know any better. She follows you around the level occasionally helping you and hindering you by trying to take off your helmet again. You are a given a choice to resist or give-in. Giving-in would lead to you getting intimate with her and your maker as the remaining air escapes your suit. Like the sailors who drowned in the myths of old, receiving love from this creatures always end up in tragedy. I bet Mero is panting right now. The whole level is like that. No raping, just her acting cute and wanting to be rewarded by being useful.
in all honesty I got the whole idea when this scene came up to me where this space ship is floating in space all dramatci like and you see the S.S.[insert name here] and the rest of the name gets covered up by something and the chapter header comes in reading: Chapter I: Hey kid wanna /ss/