"Undertale" is an RPG created by Toby Fox and released in 2015.

The statement is true because Toby Fox is indeed the creator of Undertale, which is an RPG (role-playing game) that was released in 2015. Toby Fox developed Undertale independently, incorporating unique gameplay mechanics, a captivating storyline, and memorable characters. The game garnered significant praise for its clever writing, innovative combat system, and ability to subvert traditional RPG tropes. Undertale's success and critical acclaim have made it a notable entry in the RPG genre, with Toby Fox achieving widespread recognition as a game developer.