Definitely really neat! Love seeing a project that stands out among so many others! Can't say I've really found any other 3D vore games that are actual games rather than just interactives. If I had to recommend anything for the vore aspect, I'd say adding more focus onto the actual vore would be nice. Right now, it feels like the idea of vore is there, and not much else since you are there one minute, than in the stomach the very next. The addition of sliding down the throat, possibly even with the ability to manually forward in phases with looping animations, would really add a lot to this.
I.E, you're held dangling above an open maw in phase 1, press E or Space to move onto phase two where your head is dropped in, press E or space again to move onto phase 3 where you're sliding down the throat, and so on.
Regardless of what you choose to do, this is a very interesting endeavor so far, and I look forward to seeing how it progresses! It fills a very sparse niche, and I thank you for that.