Toby Fox reveals new Undertale content we may never get to play, tells fans of the RPG that "the only limit to all this is your imagination"

Undertale is officially over a decade old now, and Toby Fox celebrated the 10-year-old indie RPG's big day during a charity ...
The Observer

A tribute to ‘Undertale’

On Sept. 15, 2025, “Undertale” turned 10 to much fanfare from old and new fans alike.
GamesRadar+

Undertale dev Toby Fox tests jokes from RPGs like Deltarune on his friends – but "if none of my friends think something is funny," he "may try to improve" them

RPGs Deltarune Chapter 3 was originally supposed to be even longer, as the devs "made most of" a third TV Time gameshow round before it was cut RPGs Toby Fox doesn't think Deltarune Chapter 5 "will be ...