1636 Pokemon Fire Red - U-- Squirrels ((exclusive)) -

Here is the breakdown of why this specific file is iconic and why the game itself is considered to have a "good story."

What Is It?

At first glance, the 16 MB .gba file appears to be a standard ROM of Pokémon Fire Red Version (2004, Game Boy Advance). However, upon emulation, the game behaves… erratically.

The title screen remains unchanged—the familiar Charizard vs. Venusaur silhouette, the iconic “Pokémon” cry. But press Start, and you are not greeted by Professor Oak. Instead, a single line of garbled text appears:

“RIVAL’S name: CHITTER”

From there, the game unfolds almost identically to the original—except for one glaring detail. All Pokémon sprites have been replaced with squirrels.

Summary

You have the "Gold Standard" ROM.

• If you want a complex, dark, or edgy story: You might find the vanilla game a bit too "kiddie" or simple compared to modern RPGs.
• If you want a nostalgic, tight adventure: It is arguably the best-paced game in the entire franchise.

Tip: Since you have the clean Squirrels ROM, if you ever decide you want a different story (like a harder difficulty or a brand new region), you have the exact file required to patch most ROM hacks available online. 1636 Pokemon Fire Red - U-- Squirrels

1.2 In-Game Index Numbers

No Pokémon in Fire Red (Kanto region) has the National Pokédex number 1636. The highest at that time was 386 (up to Deoxys). However, later generations (Gen 5 onward) include Pokémon up to #1025. But 1636 doesn’t exist. So “1636” is not a species ID.

It could be a Decamark or glitch Pokémon index. In glitch-heavy ROMs, values above 0xFFFF sometimes appear. But that’s unlikely.

5.2 Glitch Squirrel Encounter Code (Reported by fans)

Some claim that entering the Gameshark code: Here is the breakdown of why this specific

1636A4B2 3C6E

will make a “Squirrel Glitch” appear on Route 22. This is unverified and may freeze the game.

The Squirrel Glitch (or Feature?)

At the Cerulean City bridge, just before the rival battle, the game triggers an unskippable cutscene. The screen fades to black. Then, 47 squirrel sprites fill the screen in a grid formation. Each one plays a different chitter sound simultaneously. After 10 seconds, the game resumes normally—except your starter’s name is now permanently “NUTS.”

Attempting to rename the Pokémon at any Name Rater results in the text: “SQUIRREL DOES NOT RECOGNIZE YOUR AUTHORITY.” “RIVAL’S name: CHITTER”