Skip to main content
Background
Welcome to GamesRADAR+ Community !
Hi ,

Your membership journey starts here.

Keep exploring and earning more as a member.

MY ACCOUNT

Badge picture
Earn your first badge
Read 1 article to unlock your first badge.
Keep earning badges
Explore ways to get more involved as a member.
Latest Games News

Latest Games News

Breaking gaming news and updates

Read Now
Latest Games Reviews

Latest Games Reviews

Expert verdicts on the newest releases

Read Now

See what you’ve unlocked.

Explore your membership benefits.

Explore
Member Exclusives

Stay Ahead with GamesRadar+

Get the biggest gaming news, reviews, and releases straight to your inbox.

Explore

Sign Out
GamesRadar+ GamesRadar+
US EditionUS CA EditionCanada UK EditionUK AU EditionAustralia
Sign in
  • View Profile
  • Sign out
  • Games
    • Game Insights
      • Games News
      • Games Features
      • Games Reviews
      • Games Guides
      • Big in 2026
      • Big Preview
      • Future Games Show
      • Golden Joystick Awards
    • Genres
      • Action Games
      • RPGs
      • Action RPGs
      • Adventure Games
      • Third Person Shooters
      • FPS Games
    • Platforms
      • PS5
      • Xbox Series X
      • PC
      • Nintendo Switch
      • Nintendo Switch 2
      • Tabletop Gaming
    • Franchises
      • Grand Theft Auto
      • Pokemon
      • Assassin's Creed
      • Monster Hunter
      • Fortnite
      • Cyberpunk
      • Red Dead
      • The Elder Scrolls
      • The Sims
  • Entertainment
    • TV Shows
      • TV News
      • TV Reviews
      • Anime Shows
      • Sci-Fi Shows
      • Superhero Shows
      • Animated Shows
      • Marvel TV Shows
      • Star Wars TV Shows
      • DC TV Shows
    • Movies
      • Movie News
      • Movie Reviews
      • Big Screen Spotlight
      • Superhero Movies
      • Action Movies
      • Anime Movies
      • Sci-Fi Movies
      • Horror Movies
      • Marvel Movies
      • DC Movies
    • Streaming
      • Apple TV Plus
      • Disney Plus
      • Netflix
      • HBO
      • Amazon Prime Video
      • Hulu
    • Comics
      • Marvel Comics
      • DC Comics
  • Hardware
    • Insights
      • Hardware News
      • Hardware Reviews
      • Hardware Features
      • Buying Guides
    • Computing
      • Desktop PCs
      • Laptops
      • Handhelds
    • Peripherals
      • Headsets & Headphones
      • TVs & Monitors
      • Gaming Mice
      • Gaming Keyboards
      • Gaming Chairs
      • Speakers & Audio
    • Accessories & Tech
      • Gaming Controllers
      • Tech
      • SSDs & Hard Drives
      • VR
      • Accessories
      • Retro
  • Deals
    • Toys & Collectibles
    • Lego
    • Dungeons and Dragons
    • Merch
  • Video
    • Videos
    • GR+ Replay - Submit Your Clips
    • G+RLS Podcast
  • Newsletters
    • Quizzes
    • About Us
    • How to pitch to us
    • How we score
    • Newsarama
    • Retro Gamer
  • Home
  • Games
    • View Games
      • Games News
      • Games Features
      • Games Reviews
      • Games Guides
      • Big in 2026
      • Big Preview
      • Future Games Show
      • Golden Joystick Awards
      • Action Games
      • RPGs
      • Action RPGs
      • Adventure Games
      • Third Person Shooters
      • FPS Games
    • Platforms
      • View Platforms
      • PS5
      • Xbox Series X
      • PC
      • Nintendo Switch
      • Nintendo Switch 2
      • Tabletop Gaming
      • Grand Theft Auto
      • Pokemon
      • Assassin's Creed
      • Monster Hunter
      • Fortnite
      • Cyberpunk
      • Red Dead
      • The Elder Scrolls
      • The Sims
  • Entertainment
    • View Entertainment
    • TV Shows
      • View TV Shows
      • TV News
      • TV Reviews
      • Anime Shows
      • Sci-Fi Shows
      • Superhero Shows
      • Animated Shows
      • Marvel TV Shows
      • Star Wars TV Shows
      • DC TV Shows
    • Movies
      • View Movies
      • Movie News
      • Movie Reviews
      • Big Screen Spotlight
      • Superhero Movies
      • Action Movies
      • Anime Movies
      • Sci-Fi Movies
      • Horror Movies
      • Marvel Movies
      • DC Movies
    • Streaming
      • View Streaming
      • Apple TV Plus
      • Disney Plus
      • Netflix
      • HBO
      • Amazon Prime Video
      • Hulu
    • Comics
      • View Comics
      • Marvel Comics
      • DC Comics
  • Hardware
    • View Hardware
      • Hardware News
      • Hardware Reviews
      • Hardware Features
      • Buying Guides
      • Desktop PCs
      • Laptops
      • Handhelds
    • Peripherals
      • View Peripherals
      • Headsets & Headphones
      • TVs & Monitors
      • Gaming Mice
      • Gaming Keyboards
      • Gaming Chairs
      • Speakers & Audio
      • Gaming Controllers
      • Tech
      • SSDs & Hard Drives
      • VR
      • Accessories
      • Retro
  • Deals
    • Toys & Collectibles
    • Lego
    • Dungeons and Dragons
    • Merch
  • Video
    • View Video
    • Videos
    • GR+ Replay - Submit Your Clips
    • G+RLS Podcast
  • Newsletters
    • Quizzes
    • About Us
    • How to pitch to us
    • How we score
    • Newsarama
    • Retro Gamer
Trending
  • Countdown to GTA 6
  • Join our monthly RPG Club
  • Game of the Week
  • G+RLS Podcast
  • GTA 6
  • Best gaming tech
  • RPG Hub
  • Submit your clips. Win prizes
Sign up to the GamesRadar+ Newsletter

Weekly digests, tales from the communities you love, and more


By submitting your information you agree to the Terms & Conditions and Privacy Policy and are aged 16 or over.

You are now subscribed

Your newsletter sign-up was successful


Want to add more newsletters?

GamesRadar+

Every Friday

GamesRadar+

Your weekly update on everything you could ever want to know about the games you already love, games we know you're going to love in the near future, and tales from the communities that surround them.

GTA 6 O'clock

Every Thursday

GTA 6 O'clock

Our special GTA 6 newsletter, with breaking news, insider info, and rumor analysis from the award-winning GTA 6 O'clock experts.

Knowledge

Every Friday

Knowledge

From the creators of Edge: A weekly videogame industry newsletter with analysis from expert writers, guidance from professionals, and insight into what's on the horizon.

The Setup

Every Thursday

The Setup

Hardware nerds unite, sign up to our free tech newsletter for a weekly digest of the hottest new tech, the latest gadgets on the test bench, and much more.

Switch 2 Spotlight

Every Wednesday

Switch 2 Spotlight

Sign up to our new Switch 2 newsletter, where we bring you the latest talking points on Nintendo's new console each week, bring you up to date on the news, and recommend what games to play.

The Watchlist

Every Saturday

The Watchlist

Subscribe for a weekly digest of the movie and TV news that matters, direct to your inbox. From first-look trailers, interviews, reviews and explainers, we've got you covered.

SFX

Once a month

SFX

Get sneak previews, exclusive competitions and details of special events each month!


Join the club

Get full access to premium articles, exclusive features and a growing list of member rewards.


An account already exists for this email address, please log in.
  1. Games
  2. RPGs
  3. Deltarune

17 years after it was released, I'm tracing Undertale and Deltarune's origins back to Toby Fox's spooky Earthbound mod

Features
By Miri Teixeira
Published 7 July 2025

Now Playing | Toby Fox's very early work is still worth playing as a time capsule full of ideas that would find their feet in Undertale and Deltarune

When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works.

A cropped screenshot from Undertale, showing Frisk and Sans standing in Grillby's in Snowdin.
(Image credit: tobyfox)
  • Facebook
  • X
  • Pinterest
  • Flipboard
  • Email
Share this article
0
Join the conversation
Follow us
Add us as a preferred source on Google
Subscribe to our newsletter

I am perhaps creating an enemy out of someone I hold in very high regard by bringing up something they created as a teenager, within a very limited time frame for a niche competition. God knows if someone dredged up the anime nu-metal lineup I drew and then embroidered onto the front of a pillow (?) for a class when I was about 14, I'd apply for witness protection immediately and you'd never hear from me again. But I want to talk about Undertale creator Toby Fox's Earthbound Halloween Hack.

To my mind there's a key difference between his early work and my textile abomination. While the Halloween Hack might be dismissed as edgy or cringe (it is frequently both, and has been referred to as such by its creator), it's a great case study of a talent early in development, a glimpse at ideas which, with some nurturing, became one of the most well-known indie games of our generation. I hope, so long as I'm looking back on it with a knowing fondness rather than an unreserved reverence, maybe he might just forgive me a foray into the past.

It's common knowledge to many fans that much of Deltarune was thought up during the production of Undertale, and the two share many similarities – and even, according to some theorists, significant secrets. But some of the content in both games can be traced back even further.

Latest Videos FromGamesRadar+
Watch full video here:

Earthbound origins

The key art for the full release of Deltarune

(Image credit: Toby Fox)
Choose your adventure

Baldur's Gate 3 Karlach looks surprised

(Image credit: Larian)

We've rounded up the best RPGs for you to check out

For the uninitiated, the Halloween Hack was created in 2008 for a romhacking competition on the Starmen forum – a place that celebrates all things Earthbound. Romhacking is a notoriously hit-or-miss activity, especially using the fan-made software common on these forums, but Fox single handedly created a twisted vision of a sequel gone wrong that handled well and still holds up today (albeit once you desensitize yourself to its ridiculous difficulty level). Far from the Peanuts-esque sensibilities of the source material, the Halloween Hack turned the game into a gruesome exploration of neuroses, fears, and internal conflict.

Teenaged Toby Fox was already incubating some of the key ideas that would find their feet in his later games, many of which owe their origin to Earthbound. He didn't invent the concept of emotional whiplash moments, or creative and tongue-in-cheek enemy types, or checking enemies before you attack them. But in the Halloween Hack, he experiments with cranking these ideas up even further. We also see a few glimpses of themes that are fairly consistent in Toby Fox's later work, little motifs and ideas that have since grown to encompass countless jokes, plotlines, characters, and even ARG-style content.

You may like
  • Crashphalt 8-year-old indie game on Steam suddenly jumps to over 500 thanks to Undertale multiplayer mod
  • A header image for GamesRadar+s Best Games of 2026 list, showing 007 First Light, Mina the Hollower, Resident Evil Requiem, and Star Fox in a grid with an orange plus sign in the middle The best games to play in 2026, so far
  • A plush dog has a sunflower sprouting from its head Deltarune's Toby Fox says "there are no more wacky silly adventures" in Chapter 6 and 7

For all its of-its-time limitations, clumsily worded dialogue, and endless grinding, I really enjoyed playing it. It starts, by design, rather lazily. Everything is pretty similar – the original sprites are given a little remixing, the town is just a recolor of Twoson (the second town in Earthbound), and even the music is a jazzed up version of the Love theme from Mother 3 (the sequel to Earthbound). The only major change is the main character, who has changed inexplicably from Ness, a wholesome cap-sporting young lad, to Varik, the lead from the 1991 action RPG game Brandish, of which Fox is a fan.

PIECES OF GASTER vol. 1 | All Gaster Secrets Theories Evidence Explained in Undertale + Deltarune - YouTube PIECES OF GASTER vol. 1 | All Gaster Secrets Theories Evidence Explained in Undertale + Deltarune - YouTube
Watch On

In the Halloween Hack, Varik is a mercenary or bounty hunter archetype – an unlikely hero – who wakes up drunk in Ness' house. He's asked to leave, explores a little, and is soon asked to investigate a murder. A monster has violently killed the parents of a young girl, and Varik is enlisted to enter the sewers and kill it. Simple. This intentionally lackluster start disarms the player. It feels like a clumsy fanfic, an attempt to smush two games together without much care or attention. But then you enter the sewers.

There's a point of no return here. Suddenly, the hack becomes its own game. Every sprite is a vastly different version of its Earthbound counterpart, colors are dramatically flipped, new music floods in, and everything diverges to form a completely unique and horrifying experience. Battling through this land and its grotesque monsters, Varik soon comes across the lab of Dr. Andonuts. While a perfectly benign character in Earthbound, in the hack, Andonuts has been driven mad by the assumption that his actions during the plot of Earthbound killed his son Jeff and his friends. In reality, no one has died, they've merely been transported to another parallel universe. It's messy. But this Dr Andonuts is very much in his villain era.

By this point we've already been introduced to some Toby-isms. Apologetic enemies who don't want to hurt you, other enemies missing turns just to laugh or crack jokes. There are mutterings of Undertale's Determination in the way that Varik is pushed onwards by a feeling he doesn't understand. "Some forbidden force drives your legs yet forward," brings to mind the split between player and character in Deltarune. The character doesn't have any say, but YOU do. A theme that Fox will come back to again and again, but one that found its feet in the Halloween Hack, as you'll soon see.

Once you reach Dr. Andonuts' lab and listen to his evil ramblings, he seals himself in a capsule and hides. As Varik, you walk up to him and the game gives you the option to stab him to death. So of course, you stab him to death. The end.

You may like
  • Crashphalt 8-year-old indie game on Steam suddenly jumps to over 500 thanks to Undertale multiplayer mod
  • A header image for GamesRadar+s Best Games of 2026 list, showing 007 First Light, Mina the Hollower, Resident Evil Requiem, and Star Fox in a grid with an orange plus sign in the middle The best games to play in 2026, so far
  • A plush dog has a sunflower sprouting from its head Deltarune's Toby Fox says "there are no more wacky silly adventures" in Chapter 6 and 7

Unless you press B.

Earthbound Halloween Hack - Final Boss Dr. Andonuts + Ending - YouTube Earthbound Halloween Hack - Final Boss Dr. Andonuts + Ending - YouTube
Watch On

If you do, the narrator starts to get irate, confused, even. Why didn't you stab him? What are you hoping to achieve? Moments later, you're transported to a new world: Dr. Andonuts' Magicant. The second half of the game begins.

In Earthbound, Magicant is a dreamland, a reflection of Ness' subconscious. It's a place for exploration of ideas that are best described through embodiments of concepts. In the Halloween Hack, it serves the same purpose – only this time, it's Dr Andonuts' subconscious we get to explore. Wracked with guilt and fear over his lack of effort with his child, the "death" of both his wife and child, and – interestingly – his latent homosexuality and the impact it had on his marriage, Dr Andonuts' Magicant is a classic example of Fox's predilection for juxtaposing the serious and the silly.

This creativity is what draws so many people to Undertale and Deltarune – through sections of corny jokes and zany chaos, you're still encouraged to examine deeper themes. These characters may be fun, but underneath they're fully fleshed-out, they react how you might imagine to being hurt or betrayed, no matter how many memes they might have inadvertently created in the meantime.

Toward the end of Deltarune Chapter 1, things still feel fairly low-stakes, until Kris rips out their heart, exposing you (the player) as a separate entity. The separation of payer and character isn't a unique concept but it's one beautifully explored in Deltarune, especially the later chapters. When Varik bumps into Ness in the Halloween Hack, the two confuse each other, with Ness saying "hey me!" and "aren't you me?", while his own mother makes a similar mistake. Could it be that Varik IS Ness and his mercenary facade is down to us as the player entering a game and killing and killing until we're finished, even with very little reward?

San thanks the player in Deltarune

(Image credit: Toby Fox)

There's an implication across the two games of the player being the thin thread holding two wildly disparate characters together, killing enemies because that's just what you do when you play a game. Undertale asks us to look at this too – why be cruel when you can be kind? Because that's how games work.

This constant subversion is apparent in the Halloween Hack, and for fans of Earthbound who want something a little meatier, a little more "adult" from the series, their first thought may not be to look to a teenager. But I'd argue, despite its flaws, that there's a significant chunk of Undertale and Deltarune fans who would be charmed by the rustic nature of it even today.

Not to mention, the first ever appearance of Megalovania – a song so popular even the late Pope Francis had heard it performed – was not in Undertale at all, but in the Halloween Hack. Once you start playing this game you have no choice but to dive headfirst down the rabbit hole like I did. And it really goes deep. If you keep your eyes peeled, you'll even spot a proto-Flowey.

I'll leave it up to you to decide whether to descend, but if you fit into that group of Undertale/Deltarune fans who also love Earthbound, know how to emulate, and are able to handle a good dose of teenage edginess – I'd still, controversially, recommend the Halloween Hack today. Just don't tell Toby Fox it was me who sent you.


Deltarune review: "This Undertale successor is an unapologetically weird RPG epic, where each chapter is a new canvas that doesn't have to conform to any rigid rules, style, or logic"

CATEGORIES
PC Gaming Platforms
Miri Teixeira
Miri Teixeira
Social Links Navigation
Contributor

Miri has been writing about games for almost a decade, and is always on the lookout for another Disco Elysium-style read-a-thon, a Myst-like island to get lost in, or an unsettling head-scratcher like Pathologic. Both Miri and their favourite games have been described as “weird and unsettling”, but only one of them can whip up a flawless coffee cake.

You must confirm your public display name before commenting

Please logout and then login again, you will then be prompted to enter your display name.

Read more
Crashphalt
Games 8-year-old indie game on Steam suddenly jumps to over 500 thanks to Undertale multiplayer mod
 
 
A header image for GamesRadar+s Best Games of 2026 list, showing 007 First Light, Mina the Hollower, Resident Evil Requiem, and Star Fox in a grid with an orange plus sign in the middle
Games The best games to play in 2026, so far
 
 
A plush dog has a sunflower sprouting from its head
RPGs Deltarune's Toby Fox says "there are no more wacky silly adventures" in Chapter 6 and 7
 
 
A multiplayer skirmish in N Plus Infinity Times Two
Platforming Games These devs spent 22 years building the perfect platformer, and the Steam apocalypse won't stop them
 
 
Tenna's face screen shows the number five
RPGs Deltarune Chapter 5 immediately breaks all-time Steam peak with nearly 300,000 players and counting
 
 
Arcane: Mystery Serial screenshots
Horror Games "They don't make 'em like they used to": How flash player games defined an era of indie horror
 
 
Latest in RPGs
A close up of Geralt in The Witcher 3 Remastered.
The Witcher What's new in The Witcher 3 Remastered?
 
 
Cai looks up at Dietrich with wide eyes in Fire Emblem: Fortune's Weave
RPGs Fire Emblem: Fortune's Weave players already found a way to recruit characters much quicker
 
 
Geralt in The Witcher 3 Remastered
The Witcher The Witcher 3 will be free on PC for Xbox players next week, CD Projekt Red confirms
 
 
A blonde-haired character and an Inosuke-inspired character fight in Slayers 2.
RPGs Slayers 2 codes (September 2026) and how to redeem them for Wen and Spins
 
 
Fable
RPGs After Forza Horizon, Fable devs wanted to prove "we could cut it in a different genre," lead says
 
 
The Blood of Dawnwalker protagonist Coen staring down at the camera as the sun shines behind him
RPGs The Blood of Dawnwalker was made on a budget of $40 million much like Kingdom Come: Deliverance 2
 
 
Latest in Features
Players fishing and chopping wood in a forest in RuneScape: Dragonwilds
Survival Games RuneScape: Dragonwilds has gathered its ingredients but still lacks flavor
 
 
A soldier vaulting over a stone wall with an assault rifle raised in one hand in Call of Duty: Modern Warfare 4
Call of Duty Modern Warfare 4 should feel "ripped from the headlines," says Call of Duty developer: "It's been a while since we've seen the grunt perspective"
 
 
Screenshot from an Overwatch trailer, showing Doctrine, a slick vampire with red glasses and an armored suit.
FPS Games I suck at Overwatch but I was dominating with new hero Doctrine, so I smell a nerf coming
 
 
Robert Downey Jr. in Avengers: Infinity War
Marvel Movies Move over Endgame – Avengers: Infinity War might just be the most important MCU movie
 
 
Theodora lounges in a chair in Fire Emblem: Fortune's Weave
RPGs Fire Emblem: Fortune's Weave is my ideal RPG sequel and the Three Houses followup I always wanted
 
 
Mortal Shell 2 shell in dark iron armor
Action RPGs The worst experience I've had with a game all year: Bugs in Mortal Shell 2 nearly killed it for me
 
 
LATEST ARTICLES
  1. The first look at the new Street Fighter movie in the trailer
    1
    New Street Fighter trailer compiles all of the video game moves featured in the live-action movie
  2. 2
    Stellar Blade boss offers to help PlatinumGames make Bayonetta 4
  3. 3
    New Bungie leaders insist they are fixing the studio, tell players to "keep us accountable"
  4. 4
    With $3 million in Steam pre-orders, new horror-themed Stardew Valley-like "might be massive"
  5. 5
    Bungie admits Marathon "did not reach as many players as we had hoped"

GamesRadar+ is part of Future US Inc, an international media group and leading digital publisher. Visit our corporate site.

Add as a preferred source on Google Add as a preferred source on Google
  • About us
  • Contact Future's experts
  • Terms and conditions
  • Privacy policy
  • Cookies policy
  • Advertise with us
  • Review guidelines
  • Write for us
  • Accessibility statement
  • Careers

© Future US, Inc. Full 7th Floor, 130 West 42nd Street, New York, NY 10036.

Please login or signup to comment

Please wait...