Hello Dev / Devs,
After exploring the free version (which of course is not a true representation of the current state of the project) I would like to offer encouragement alongside some suggestions.
First, the vision you have is on the ball - so long as the ultimate goal (budget, time, and technology permitting) is to establish a game that doubles as a virtual life sim with extraordinary levels of immersion and freedom for the user. I do believe the demand for this is through the roof, and the first person to get a project like this off the ground will be rolling in it. The potential here incomprehensible the way AI is progressing. This brings be to a suggestion (one which you may have already considered and moved on from, so forgive me if this is irrelevant) - check out Convai, both for the services it offers and the concept more generally. It appears that the systems they are showcasing fit very well with your project by powering NPC's with generative ai for speech and interaction with in game objects (and more I assume). Borrowing from this concept (or partnering with Convai itself) could be a solid recipe to overcome any plateau you may have reached as well as offer a "premium" tier to your users upon full release.
Additionally, if I were you (after the project is in a better more reliable state) I would consider adding features to the adult side of the game that allow for more real time interaction with NPC during sexualized role playing - for example, allowing user to simulate touch interaction using point and click/drag inputs (with npc directly, "other" objects, clothing etc.). This, would also pair well with a system like convai, which would allow these live point/click and drag interaction to be included in the context that is passed to the AI currently powered strictly with LLM (in other words, NPCs react to touch interactions and text/speech). I think the value and potential here is unlikely to be lost on you so i will stop here.
Keep at it. You are on to something.