This is a really cool idea! I do wish that it would warn you a little earlier when you organs are failing, but maybe I just need to git gud. I have encountered a bug though,after you die and come back, you can no longer move.

But this is a pretty cool game nonetheless! Good Job!

Pretty cool take on the theme!

I really liked how you made a little world to explore out of a variety of organs, it was fun to move around and fight our inner hazards in different ways. Adaptive music is great too!

On the gameplay side, playing a couple of times, the only thing I didn't get to explore as much was the 'shop' for healing/upgrades, since I was a bit slow to get enough nutrients before it was a bit late, but I think I could keep improving.

From what I played, this could even evolve into a fun teaching tool with the proper scientific backup!
Good stuff!