Undertale is a game about choice.
The big hook is that you can choose to never (physically) harm anybody. Over the course of a playthrough’s 6-10 hour runtime, you’ll encounter plenty of battles (random or otherwise), but you don’t have to fight in any of them. You can always pick non-violent, contextual means of interacting with monsters—everything from petting dogs to initiating flexing contests with a douchebro horse man—and spare them in the end.
Faith is SO INTO this game right now.