Play: You click buttons to talk to and interact with her, and unlock more buttons you can click. It's a visual novel with an RPG coat of paint, which fits well with the general theme.
Aesthetic: There's only a few graphics, but they look pretty good. Obviously, most of the time was spent on the Slime Queen's sprites, and she's very well-done- if/when you update the game, maybe consider putting her in an environment that seems a little more suited? The hallway setting is reminiscent of classic adventure games, but she might be more at home in a fun slimey throne room or something.
Sound: I really like the music! I think there's also a very subtle text-typing sound? I might be imagining it, but if it's really there, good job with that.
Narrative: There is a straightforward narrative that can be understood without any supplementary reading, and it makes sense. Better than my entry lol
Horny: It's a sex encounter simulator, so full marks here.
Kink: Regarding the game page, I didn't know that slime and tentacles were in the same sort of category, although it makes sense now that I think of it. Also, I like that you took specific care to depict everything as consensual, from what I've seen it's a real problem in that genre so I appreciate the good vibes here.
Stealth: It's not that kind of game, and that's fine.
Harmony and Novelty: It's a 'click and read' sort of game- relying on a solid formula means you're not breaking new ground. These two categories tend to be the inverse of each other up to a certain point, imo.
Final Thoughts: Interesting that this was made with RPGMaker. I definitely would have gone with Ren'py or something else specifically made for visual novels, I'm interested to hear a bit about what making this was like :0 I guess the 'full version' you tease at would have, like, walking around and stuff? Interesting premise.