Consider the . This massive, lumbering beast is native to the heavily industrialized zones. Its name implies iron, and its physiology backs that up.

But the Underrail Agents are not without their nemesis. A rival faction, the CRISPR/Cas9 Special Forces, has been activated to counter their subversive activities. These precision-guided genome editors track down the rogue RNAs, cutting them down with their molecular scissors.

Without Biology, these are lottery tickets you find once. With Biology, they are a renewable resource. You become a god pumping combat stims directly into your veins.