Making your settlers have violent arena fights with each other is fucking hysterical, one of the more amusing things to do with the base game's building system for sure - but the cages feel barely functional, and setting up the aforementioned fights is way more complicated and unresponsive than it should be. Ultimately one more big shrug to add to Fallout 4's already mostly meh DLC list, forgot this even existed until I re-checked my logs.