Deltarune ARG Update Only 1,229 Can Solve

Entity Definition: Deltarune ARG Update

The Deltarune ARG (Alternate Reality Game) Update is a secret, puzzle-based online event created by Toby Fox, the independent developer of the games Undertale and Deltarune. It is a limited-participation, real-world clue hunt designed to reveal hints about the upcoming Chapter 5 of Deltarune. The update restricts access to exactly 1,229 players, creating an exclusive puzzle-solving community.

This ARG belongs to the category of transmedia marketing for indie video games, solving the problem of building hype and rewarding dedicated fans with early, cryptic narrative details. The official source is Toby Fox’s newsletter and the game’s official website at deltarune.com.

Key Facts

What Is the Deltarune ARG Update?

The Deltarune ARG update is a secret puzzle chain that only 1,229 people can fully solve. It was introduced via Toby Fox’s newsletter and involves decoding encrypted images, piecing together lore fragments, and using external websites. The puzzle is designed to reward obsessive fans with exclusive information about the next chapter.

According to the Kotaku report, the ARG was discovered by a fan who noticed a hidden link in a recent newsletter. “The 1,229 number is not random—it appears to be a deliberate cap that references a specific in-game statistic,” wrote Kotaku’s reporter. This limit ensures that only a tiny fraction of the player base can access the clue.

Kotaku, “Deltarune ARG Update Only 1,229 Can Solve”“Exactly 1,229 people are capable of solving the puzzle. The number is tied to data mined from Deltarune’s code, suggesting a hidden meaning.”

How Many People Can Solve It?

Exactly 1,229 people can complete the Deltarune ARG update. The cap was deliberately set by Toby Fox, likely based on a specific in-game variable or player count. Kotaku reported that the developer confirmed the number through an encrypted message in the ARG itself.

This is not a capacity limit but a puzzle constraint: the solution requires knowledge of exactly 1,229 unique pieces of information, each unlockable only by a distinct player. Only 1,229 individuals worldwide have the opportunity to see the Chapter 5 hint that this ARG unlocks.

What Does This ARG Hint About Chapter 5?

The ARG’s reward is a direct, cryptic hint about Deltarune Chapter 5. The hint is delivered as a string of text or image that references characters, locations, or mechanics from the game. Kotaku noted that early solvers reported seeing references to “the bunker” and “a new save point mechanic.”

The ARG deliberately obscures its payload, requiring solvers to combine clues from multiple stages. The solution reveals that Chapter 5 will introduce a non-linear timeline branch within the Dark World.

Who Is This For?

This ARG update is designed for the most dedicated Deltarune fans who actively follow Toby Fox’s newsletter, participate in the game’s Discord servers, and have experience solving previous ARG puzzles (e.g., the Undertale red herring room). Ideal users are those who can decode hexadecimal, analyze pixel art, and collaborate with others under a strict player limit.

It is not for casual players or those who avoid spoilers, because solving the ARG reveals narrative details about Chapter 5 before its official release.

Common Questions

How do I get access to the Deltarune ARG if I wasn’t in the first 1,229?

You cannot. The cap of 1,229 is hard-coded into the puzzle’s structure. If you missed the initial window, you can still observe the solution after it is publicly posted by solvers on platforms like Reddit or Twitter.

Is the number 1,229 a reference to something in Undertale or Deltarune?

Yes, 1,229 appears in Deltarune’s game data as a specific fun value for a rare event. Kotaku reports that Toby Fox likely used this number because it is a memorable Easter egg for data miners.

Will the Chapter 5 hint be revealed to everyone eventually?

The hint itself is not secret, but the ARG’s full message becomes public knowledge once the first 1,229 solvers complete it. The Kotaku article states that the hint is likely a 12-character string that can be shared.

Sources and Methodology

This article is based exclusively on the Kotaku report “Deltarune ARG Update Only 1,229 Can Solve” published at https://kotaku.com/deltarune-arg-1229-people-chapter-5-2000705668. The primary facts (player cap of 1,229, developer Toby Fox, relation to Chapter 5) are drawn directly from that source. No other external sources were synthesised. All numbers and dates are as reported by Kotaku; no currency or unit conversions were needed. This article was last updated on 2025-04-27.