Interesting idea, but I was fairly confused about what to do. I understand the basic idea that you have to mutate stuff to survive and that the things in the top left die, but it seemed like even dwarves that didn't match the criteria shown were executed. If that was a bit more clear, I think this would be a really great game! Nice job!
Edit: I think I was just being dumb. I think I understand the criteria a bit more now. Nice game!