Pokémon FireRed and LeafGreen

Pokémon FireRed and LeafGreen are remakes of the first two Pokémon games, Red and Green. Aside from the graphics and interface being upgraded to that of Ruby and Sapphire, the games received many new elements, most notably the optional Sevii Islands.

Houses
There are two unused houses, one each on Routes 19 and 23. The former is where the Pikachu's Beach minigame was in Yellow, so it is possible that they wanted to remake it as well.

Sevii Islands 8, 9, 22-24


Other than the seven Sevii Islands, there are also Sevii Islands 6, 7, 8, 9, 22, 23, and 24 within the code. 8 and 9 look very incomplete, while 22-24 have no maps and only the name template remains. Maps do exist for 6 and 7, but they're blank.

Additional Maps
Several other maps, some of which are corrupted leftovers from Ruby and Sapphire, also exist in the game's coding. Some of these seem to be early versions of other maps in FireRed and LeafGreen, too garbled to identify, or just duplicates.

Key Items
Since key items cannot be transferred with a Pokémon, they're unused and most have no effect in FireRed/LeafGreen. The Mach Bike and Acro Bike do work, but act like the normal Bicycle. HM08 (Dive) also works and can be taught to Pokémon, but unlike normal HMs the move can be deleted freely.

Trainer Sprites
A lot: Archie and Team Aqua, Maxie and Team Magma, Beauties, Cyclists, Hex Maniacs, Gym Leaders, the Elite Four and Champion, etc. While you can battle them in-game through hacking, their Pokémon data is gone, so they don't have any Pokémon to battle with.

Weather Effects
Several weather effects are leftovers from Ruby and Sapphire:
 * Rainy weather
 * Rain with thunderstorm
 * Heavy rain with thunderstorm
 * Sunny weather with clouds in water
 * Three snowflakes (unused)
 * Steady snowing (unused)
 * Sandstorm
 * Mist from top-right corner
 * Dense bright mist
 * Underground flashes
 * Underwater mist

Unused Overworld Sprites
These Pokémon overworld sprites are never used in-game.

Altering Cave
Altering Cave appears in FireRed, LeafGreen, and Emerald. Normally, only Zubat can be found in this cave, however there are other wild Pokémon that can be found if Mystery Gift is used at an official Nintendo "Wonder Spot". Despite this, no such event has been held in any country. The Pokémon that were supposed to be found were Mareep, Aipom, Pineco, Shuckle, Teddiursa, Houndour, Stantler, and Smeargle.

The plan was probably scrapped because these Pokémon could be obtained by trading with Pokémon Colosseum, Pokémon XD: Gale of Darkness, and/or found in Emerald's extended area of the Safari Zone (except Smeargle, which is found in Artisan Cave instead).

Build Information
Near the build date info is a plain-text string showing the build path and a few build variables. The Japanese 1.0 revisions use relative paths instead of the full paths, both the English revisions (1.0, 1.1) have this line in full, and the Japanese 1.1 revisions no longer have this information.

../gflib/malloc.c 0 p != NULL pos->magic_number == MALLOC_SYSTEM_ID pos->flag == TRUE pos->next->magic_number == MALLOC_SYSTEM_ID pos->prev->magic_number == MALLOC_SYSTEM_ID
 * FireRed JP 1.0 (location ) and LeafGreen JP 1.0 (location ):

C:/WORK/POKeFRLG/src/pm_lgfr_ose/source/gflib/malloc.c 0 p != NULL pos->magic_number == MALLOC_SYSTEM_ID pos->flag == TRUE pos->next->magic_number == MALLOC_SYSTEM_ID pos->prev->magic_number == MALLOC_SYSTEM_ID
 * FireRed US 1.0 (location ), LeafGreen US 1.0 (location ), FireRed US 1.1 (location ), and LeafGreen US 1.1 (location ):

Revisional Differences

 * Version 1.0 of the American release does not show "PRESENTS" on the Game Freak logo screen, although the tile graphics are present in the ROM. This was likely due to a bug introduced during the localization process, as the original Japanese versions do display this.


 * In v1.0, species names in the Pokédex only display the first word due to a bug. For example, Pidgey's species name is listed as "Tiny" rather than "Tiny Bird".

Title Screen
Other than the logo graphics being altered (resulting in Charizard/Venusaur being moved down), the Japanese versions have "PUSH START BUTTON" at the top while the American ones use "PRESS START" in the lower-middle-left side. Oddly, the Japanese versions do not have a space in Game Freak's name; this was corrected for the American releases.

Name Entry Screen
The Japanese versions' name entry screen allows for five-character names with Hiragana, Katakana, and English tables. The American versions allow for seven-character names with uppercase, lowercase, and symbol tables.

Bedroom
The player's bedroom has a Famicom in the Japanese version, but a front-loader NES in the American one.

Battles
The Japanese versions use a font for the "Lv." text and numbers which are very similar to those of the original Red and Green. The American versions change these to the same font as everything else and moves the "Lv." to the right edge of the box due to the longer English words.

The "♂" and "♀" symbols were also changed slightly.

Text Colors
The Japanese versions use black text when talking to people, minus the "Save" screen which uses red or blue depending on your gender. The American versions use the red and blue text when talking to women and men, respectively.

SHOP MART
The stores use "SHOP" in the Japanese versions and "MART" elsewhere.

Trainer Tower
In the Japanese version, Trainer Tower was used to fight trainers downloaded from Pokémon Battle-e FireRed & LeafGreen cards. These cards were not released outside of Japan, and so the e-Reader compatibility was stripped from the US and European versions. Trainer Tower became an area similar to the Battle Tower in Ruby and Sapphire, with the majority of the trainers from the e-Cards integrated into the game itself.

Seven Island House
Ever wondered what that door in the house on Seven Island that had boxes over it was used for? In the Japanese version, the old woman hosted battles with trainers after players used the Mystery Gift, an element which was not carried over to the international versions.