Fun Fact: The virus in The Last of Us is based off a real fungus. No joke. It's called the Cordiceps fungus, and when it infects an organism (Thankfully, humans are off the menu) it gives off symptoms related to rabies, as it starts to destroy its host's nervous system.
Well, the humans in the world of The Last of Us are suffering from a mushroom parasite turning humans into zombie-like creatures. So I thought it would be cute to chase a litte mushroom instead of fighting humanoid mushrom zombies.^^