age. However, Undertale was developed in Europe, so it's actually given a Peggy rating, and more specifically. a Peggy 12 rating. This means the game is not for younger kids.

Development of Deltarune began in 2012, three years before Fox's previous game Undertale was released. Though it shares some narrative elements with Undertale, including alternate versions of characters from Undertale and the fact that that Deltarune is an anagram of Undertale, it takes place in a different setting.