

The boy then meets several monsters along the way, and uses his newfound powers to fight them off and return to the Surface.

The game's story follows a young boy growing up in the underground, who one day finds himself falling into an unknown world called Undertale. Undertale is a 2D action-adventure video game developed by indie game designer Toby Fox, who also happens to be a big fan of Japanese animation, and worked as an illustrator before turning to game development. In this world, people called the Calimero live. The game is set in a world in which an underground alternate universe is in existence in which the old world and the new are different. Undertale is a dark, Japanese-style role-playing video game developed by indie developer Toby Fox.
