To begin, I’m no biologist or ecologist, I’m a mechanical engineer. I have a high school level of education about environmental science, the food chain and the interconnected nature of the ecosystem. That being said, I know enough to strongly suspect that the sudden introduction of giant insects, exotic mutant species (jabberwocks, razorclaw, etc), and invasive extraterrestrial/dimensional organisms would play absolute HAVOC on the biosphere.
Firstly, most of the mutant organisms are predatory, so they will all be competing with the baseline native predators for prey. There are a LOT of new predators, and an ecosystem with more predators than prey species will quickly collapse. Secondly, the different capabilities and behaviors of the mutant species will affect the ecosystem as well. The native animals and plants have not had time to adapt to their presence like with their natural predators. I suspect a lot of existing native predators would be out-competed, and many of the herbivores would end up with significantly reduced numbers or outright extinct.
I propose the following features to address this:
Add mutated herbivore species and invasive extraterrestrial/dimensional herbivores/autotrophs. Some will only begin to appear after a few years, to simulate adaptation to the post-cataclysm environment.
Note: Adaptation normally takes anywhere from decades to centuries to occur, but for gameplay purposes we need to speed that up. I would justify this as the blob gradually adapting living hosts to their environment.
Adjust the spawn rate of native unmutated species so that it gradually drops over time, stabilizing after 10 years in game (maybe longer), to simulate the effects of an ecosystem partially collapsing and reaching a new equilibrium.
Adjust the spawn rate so that the mutated and invasive species increase over time (except the fungus, its bad enough already).
- A randomized mutation system for animal and plant species would be AWESOME. Have it randomly alter each species every year for the first ten years, to simulate natural selection and adaptation. Different games would end up with different ecosystems and species.