Deltarune is a role playing video game developed by Toby Fox. The player controls a human teenager, Kris, who is destined to save the world together with Susie, a monster, and Ralsei, a prince from the Dark World. During their quest to seal the Dark Fountains prophesied to end the world, the group makes both friends and foes. The combat system is turn based and uses bullet hell mechanics. Similar to Undertale, enemy encounters can be resolved peacefully or through violence.