Toxic Waste/Mutant animals

[echo yoke]

Mutant bears

[frigid flame]

I just don’t like the idea of human interference with the game’s environment

I like the idea of the environment being pure untouched whimsical nature without the interference of humans and their waste

[echo yoke]

What if it's not human?

[frigid flame]

Who else is leaving the toxic waste

[echo yoke]

Also you could still have green goo or something that turns animals into mutant versions