I wondered what would happen if I just dropped several million monsters, people, and animals from another world across Earth. Not like a system apocalypse, where constant waves of monsters keep coming, but instead just a bunch of different creatures and people showing up with no idea what the fuck was going on. Then I imagined monsters trying to play a variety of different organized sports. Like an Air Bud situation, where it's like "It doesn't say in the rules that you can't use an entire team of orcs for American Football."
I imagined chaos.