In Undertale, players control a human character who accidentally falls into an underground world inhabited by monsters. Unlike most RPGs, Undertale encourages players to avoid violence and find peaceful resolutions to conflicts. Developed by tobyfox, this indie game was released on September 15, 2015. Undertale is a critically acclaimed RPG game that offers a unique and refreshing gameplay experience. UNDERTALE: A unique RPG game with a soulful story, original art, and a battle system that allows you to negotiate instead of kill.