1636 Pokemon Fire Red - U-- Squirrels Online
Early playthroughs documented by the Bad ROM Hacking Collective have identified the following changes:
Pokémon cries are replaced with sampled chittering and scampering sounds, likely ripped from low-quality YouTube videos of squirrel feeders. Type matchups remain unchanged, though “Squirrel-type” is not recognized by the game engine—Grass, Normal, and Electric types dominate.
The ROM hack subreddit initially dismissed “1636 Pokémon Fire Red - U-- Squirrels” as a low-effort meme. But as more players documented identical behavior across emulators (mGBA, VBA-M, even original hardware via EverDrive), interest grew.
User SquirrelKing2024 wrote:
“I thought it was a virus at first. But it’s not malicious. It’s just… squirrels. I beat the Elite Four with a team of five squirrels and one ‘Electric Squirrel.’ The Hall of Fame music cuts to 10 seconds of nuts dropping on a wooden floor.”
Another user, OakIsWrong, claims:
“There’s a hidden ending. If you complete the Pokédex (all 151 squirrels), Professor Oak gives a speech about the ‘true nut’ being friendship. Then the game deletes itself.”
This last claim remains unverified, as no one has yet caught “Squirrelthree” (legendary, appears only on Route 22 during a thunderstorm while your party contains exactly 6 Acorns—an item that doesn’t exist in the base game).
If you landed here by typing “1636 Pokemon Fire Red - U-- Squirrels” into a search engine, you probably found yourself confused. No official Pokémon game mentions squirrels prominently, and “1636” isn’t a standard Pokémon index number. The “U” generally indicates the USA region release of Pokémon Fire Red Version, a 2004 enhanced remake of the 1996 original.
But what about the rest? Let’s break it down piece by piece.
Q1: Is “1636 Pokemon Fire Red - U-- Squirrels” a real Nintendo game?
No. It is either a corrupted filename, a ROM hack, or an emulator artifact.
Q2: Can I catch a squirrel in normal Pokémon Fire Red?
No. The only squirrel-like Pokémon were introduced in Gen 4 (Pachirisu) and Gen 8 (Skwovet).
Q3: What does the “U--” mean?
Likely a typo for “U.S.” or a scene release tag for “USA – unreleased beta.” Or just a formatting error: “U--” instead of “(U)”.
Q4: Where can I find the Squirrel ROM hack?
Check ROM hacking forums (PokeCommunity, GBAtemp) or search Pokemon Fire Red Squirrel Edition patch. Do not download pre-patched ROMs from unverified sites to avoid malware.
Q5: Is 1636 a cheat code for infinite items?
No known infinite item code uses “1636”. But you can try the Master Code for Fire Red (U):
D8BAE4F9 758B14E8 (Action Replay) — then add item modifier codes.
In ROM naming conventions:
Fire Red (U) for Game Boy Advance is identical to the US retail cartridge, released on September 9, 2004. It features:
Without a known author, build date, or source repository, “1636 Pokémon Fire Red - U-- Squirrels” sits in a gray area between ROM hack and digital folk art. It is simultaneously broken and functional, silly and obsessive, funny and deeply unnerving.
If you stumble across a copy, back it up. Play it. Let the chittering consume you.
And whatever you do—don’t nickname your rival anything other than “CHITTER.”
The squirrels are watching.
Have you encountered this ROM or similar anomalies? Share your findings with the RetroHoarder tip line. 1636 Pokemon Fire Red - U-- Squirrels
In the world of Pokémon emulation and modification, " 1636 - Pokemon Fire Red (U)(Squirrels)
" is not just a game; it is the industry-standard "clean" base for nearly every major Pokémon ROM hack. While the name sounds unusual, it refers to a specific digital dump of the original 2004 Game Boy Advance title. What is "Squirrels"?
"Squirrels" is the handle of the individual or group responsible for dumping this specific version of the game into a digital ROM format. In the archiving system used by ROM collectors, the number 1636 identifies its release order among Game Boy Advance titles.
The Gold Standard: It is specifically Version 1.0 of the US release.
Why it matters: Most developers build their mods (hacks) using this version because its memory addresses are predictable. If you try to apply a patch to a different version (like v1.1), the game will usually crash or fail to load. Essential Base for Popular Hacks
If you are looking for this file, it is likely because you want to play one of the following high-profile community projects: Pokémon Radical Red
: A difficult, feature-rich overhaul that includes Pokémon from all nine generations and modern battle mechanics. Pokémon Unbound
: An entirely new story and region that requires the Squirrels ROM as a foundation for its complex engine. Pokémon Rocket Edition
: A story-driven hack where you play as a member of Team Rocket, specifically designed to be patched over the 1636 version. Show more Technical Verification
To ensure you have the genuine, uncorrupted version required for patching, enthusiasts often check the CRC32 hex code, which for the Squirrels ROM is DD88761C. Key Differences from Other Versions Squirrels (v1.0) Revised (v1.1) Stability Standard for hacking Often incompatible with patches Intro Logo Slightly different "Game Freak" animation Corrected "Game Freak Presents" logo Text Fixes Original typos present Minor spacing/category fixes
Are you planning to patch this ROM for a specific fan game, or are you looking for cheat codes to use on the base version? What's the difference between different roms?
The "1636" prefix is a scene release number from the early GBA era, while "Squirrels" identifies the person or group who originally ripped the game data from the physical cartridge. The Squirrels dump is highly prized for two reasons:
Version 1.0 Compatibility: Most modern hacking tools and expansion frameworks, such as the Complete FireRed Upgrade (CFRU), are built exclusively for FireRed v1.0. Using the later v1.1 release often causes game-breaking bugs because the memory addresses (offsets) for data are shifted.
A "Clean" Base: It is known as a "clean ROM," meaning the code is an exact 1:1 replica of the retail game without any pre-applied cheats, intro screens, or corrupted data that could interfere with complex patches. Usage in Popular ROM Hacks
If you are looking to play some of the most advanced Pokémon fan games, you will almost certainly need this specific base ROM for the patching process.
Pokémon Radical Red: Known for its extreme difficulty and modern features, the Radical Red patcher specifically requests a "1636 Squirrels" ROM to ensure the Gen 9 Pokémon and Mega Evolution mechanics function correctly.
Pokémon Unbound: Widely considered one of the best fan games with an entirely original region and custom engine, it requires this version for its official patch file.
Pokémon GS Chronicles: A high-fidelity remake of Gold/Silver built on the FireRed engine that relies on the stable offsets of the Squirrels dump. Technical Details
1636 - Pokemon Fire Red (U)(Squirrels) is the specific file name for a popular ROM dump of Pokémon Fire Red Version 1.0. It is widely recognized in the fan community as the gold standard "clean" base for applying ROM hacks and patches. Early playthroughs documented by the Bad ROM Hacking
Below is a blog post draft tailored for a retro gaming or ROM hacking audience.
The Gold Standard: Why "1636 Fire Red Squirrels" is the King of ROM Hacking
If you’ve ever dipped your toes into the world of Pokémon ROM hacks—trying out masterpieces like Pokémon Unbound or Radical Red—you’ve likely seen a very specific instruction: "Patch this onto 1636 - Pokemon Fire Red (U)(Squirrels).gba".
But what exactly is the "Squirrels" version, and why is this specific file the gatekeeper to so many fan-made adventures? What is the "Squirrels" ROM?
The "1636" prefix refers to its release number in the global database of Game Boy Advance ROMs. The name "Squirrels" comes from the group or individual who originally dumped (digitized) the cartridge.
Technically, it is a clean dump of Fire Red Version 1.0 (USA). While Nintendo eventually released a Version 1.1 that fixed minor graphical glitches—like the "Game Freak presents" logo—most early hacking tools were built specifically for 1.0. Why Hackers Demand It
In ROM hacking, every byte of data has a specific "address." If a hacker moves a wall in Pallet Town or adds a new Pokémon, they are changing data at a very specific memory location.
Version Compatibility: Version 1.1 changed many of these memory addresses. If you try to apply a 1.0 patch to a 1.1 ROM, the game will often crash or glitch because the data is being "written" to the wrong place.
Cleanliness: "Squirrels" is famously a clean rip. This means it hasn't been pre-patched with cheats or "intro" screens from old piracy groups, ensuring the highest level of stability when you add your own mods.
The Industry Standard: Because it was the first widely available high-quality dump, the community standardized on it. Now, if you want your hack to be playable by the most people, you build it on the Squirrels base. How to Verify You Have the Right File
Since many files online are misnamed, you can check yours using a CRC32 hex code. The official Squirrels dump should have the following checksum: CRC32: DD88761C Common Hacks That Use This Base
Pokémon Unbound : A massive overhaul with a new region and Gen 8 mechanics.
Radical Red : A high-difficulty "enhancement" hack of the original Kanto story.
Pokémon Clover : A complete overhaul featuring entirely original "Fakemon". AI responses may include mistakes. Learn more What's the difference between different roms?
This specific file name refers to a "clean" version of the Pokémon FireRed ROM (version 1.0) for the Game Boy Advance.
While it functions as the standard game, it is most commonly used as the mandatory base for applying high-quality ROM hacks. 💡 Why this specific version?
Many popular fan-made games require this exact file—often labeled "1636" and/or "(Squirrels)"—to ensure the game doesn't crash or glitch after patching.
Compatibility: It is the industry standard for the online ROM patcher used by major hacks.
Clean Code: "Squirrels" refers to the specific dump of the game that is free of previous edits or modifications. 🎮 Common Hacks that use it This file is typically requested if you are trying to play: Pokémon cries are replaced with sampled chittering and
Pokémon Unbound: A complete overhaul with a new region, story, and Gen 8 mechanics.
Pokémon Radical Red: A difficult, competitive-focused "difficulty hack".
Pokémon Gaia: A highly polished fan game with a custom story and Mega Evolution. 🛠️ How to use it
Obtain the .ups or .ips patch file for the hack you want to play.
Go to an online patcher or use a tool like Multipatch or UniPatcher.
Upload the 1636 Squirrels file as the "ROM file" and your hack file as the "Patch file".
Download the resulting file and play it on an emulator like mGBA (PC) or MyBoy! (Android).
⚠️ Note: To avoid save errors, ensure your emulator's Save Type is set to Flash 128K.
Understanding "1636 - Pokemon Fire Red (U) (Squirrels)" If you have spent any time in the Pokemon ROM hacking community, you have likely encountered the specific filename "1636 - Pokemon Fire Red (U) (Squirrels)". While it may look like a random string of numbers and words, this particular version of the game is the gold standard for many players and developers. What is the "Squirrels" Version?
The "Squirrels" version refers to a specific "dump" or copy of Pokémon FireRed Version 1.0 (USA).
1636: This is a release number from historical ROM scene groups, used to catalog games in the order they were released or indexed.
U (USA): Indicates the game is the North American regional release.
Squirrels: This is the name of the individual or group who originally dumped the game data from the physical Game Boy Advance cartridge. Why is This Specific ROM So Popular?
Most players do not seek out the Squirrels ROM to play the base game, as there is a later Version 1.1 that fixes minor bugs. Instead, the Squirrels version is essential for ROM Hacking.
Compatibility with Patches: Most major ROM hacks, such as Pokémon Radical Red or Pokémon Unbound, are built specifically using the Squirrels v1.0 base.
Memory Offsets: Version 1.1 of FireRed moved several internal memory addresses. Because hacking tools and patches are programmed to look at specific "offsets" in the code, applying a 1.0 patch to a 1.1 ROM usually results in a broken or unplayable game.
Community Standard: Over the decades, it has become the default "clean" ROM for the English-speaking hacking scene. Common Uses for 1636 Fire Red
While the original game features the classic Kanto adventure with enhanced Gen 3 graphics, today’s users typically use this file for: 1636PokemonFireRedUSquirrels directory listing