Cute game!
I like that I was actually thinking about which items I would bring with me, and that I needed to separate the good ones with the not as good ones so I didn't use all of them at once. While some items I don't really see a downside for, like the Halo, (in which I could only really see it being not that useful early on, since you aren't likely to pick the tooth early, so you might as well not use it to decrease the chances of the bot surviving.)
Personally, I would like to see some more elements or items that can help you deduce which teeth are aren't rotten, but I think that's just me trying to fight the natural RNG of the game, and that its just a part of how it works. But, I feel as though losing can feel a bit out of your control, which is maybe the point overall though.
I think my favorite item is the coin, since it is either really good early on, getting to be able to remove 3 teeth to lower the chances quicker, or only 1 later on will be beneficial. I think that the item that reveals where the tooth isn't should persist and stay, since the player might not be expecting to have to remember where it is, especially when there is a perspective change right after it shows you as well.
Maybe an item that resets some of the teeth, then moves the rotten one would be nice. Since it can help you raise your chances if there is only a few left. Or lead into a larger play with a coin.
I am wondering though, if the item that adds a rotten tooth is used, then the one that moves the rotten tooth. Are all of the rotten teeth moved? Does it reset the rotten teeth back to only 1? Does it only move the original? That one felt like it could be a tossup depending on how it was implemented.
The theming on this is great, and I love the idea of there being an entire gameshow based around this idea. The art and music really sell on it too.
Great work!