The paid release of Deltarune, Toby Fox’s episodic Undertale spinoff, will be available for most people at the same time the Nintendo Switch 2 launches in Japan, Fox says in the Deltarune newsletter for May 2025. Deltarune’s first two chapters, released in 2018 and 2021 respectively, were free, but this new release, which adds chapters 3 and 4, will be a paid version that costs $24.99. 

How the release timing will work is a little confusing, but let me explain. For PS4, PS5, Steam, and the original Switch, Deltarune will launch on June 5th at 12AM in Japan, which translates to June 4th at 11AM ET / 8AM PT for people in the US.

The Nintendo Switch 2 version of Deltarune, on the other hand, will launch at midnight local time in most regions on June 5th. This decision actually means that people in New Zealand or Australia who get a Switch 2 at midnight have a slight head start. “But, for convenience’s sake, we’re just going to ignore you guys and pretend that the game is not out… Meanwhile, don’t say anything about it please,” Fox says.

Future updates to Deltarune will be added for free, Fox said in a newsletter last month, and the Switch 2 version will have a special room that takes advantage of the console’s mouse controls.

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Link :
https://www.theverge.com/news/664621/deltarune-nintendo-switch-2-launch-time