More UNDERTALE?! Not exactly, but if the game left you craving for more, check out Toby’s next project, Deltarune! As of right now, the first two chapters are out and you can try them out for free! The Underground awaits Will you show monsters standing in your way MERCY, or slaughter them all? Their only weapon being their DETERMINATION as they try to FIGHT or ACT their way out. UNDERTALE is an indie RPG created by developer Toby Fox about a child, who falls into an underworld filled with monsters.