Your nichelings are now flies, their lifespan is 1 day for baby 1 day for child 1 day for teen 5 days for adult You win if you get to 20 generations Disable wanderers so that the only option to get new immunities are rogues. Set the starting age to 4 days Forbidden genes: big nose short snout poison fangs prehistoric genes bearyena genes Optional challenges; Start on a hard or difficult island.  Disable healing plants.