Pokemon Red Version: Pokemon Red Blue SGB Palettes and Spaceworld BackSprites

This is an improvement patch for Pokémon Red and Blue that to adds limited color to the game when played in GBC mode as well as add the higher resolution Gold/Silver beta back sprites from Spaceworld '97. The color palettes are done in such a way that the games maintain backwards compatibility with the DMG (thanks to jojobear13 from pokecommunity). One version of the patch (for Blue) will also change the in-game trades and wild Pokémon locations to that of the Japanese Blue version. Don't expect this patch to be compatible with any other patch of the game.

Changelog

1.1
-Fixed several graphical bugs relating to the Pokémon Yellow code
-Lots of quality of life additions (optional):
- Move Deleter
- Tradeback NPC
- Prof. Oak Battle
- Sleep max turns--6 (from 7)
- Low HP alert tone relief
- Alternate frontsprites for 3 Pokémon

1.0
-Original release

Changelog
-----------------------------------------
1.1
-Fixed several graphical bugs relating to the Pokemon Yellow code
-Lots of quality of life additions (some optional):
-Move Deleter
-Tradeback NPC
-Prof. Oak Battle
-Sleep max turns-->6 (from 7) (optional)
-Low HP alert tone relief
-Alternate frontsprites for 3 Pokemon (optional)

1.0
-Original release
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Features
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1. Backwards compatible color ported from the North American Yellow Version (so the game is playable on a DMG and SGB). Some palettes were altered from Yellow--specifically the MEWMON, GREYMON, LOGO1, and LOGO2 palettes.


2. Higher-res backsprites that fit with the art style of the frontsprites from this era (as they are made by Game Freak). Several backsprites were slightly cropped if a.) they had empty space at the bottom of their box, or if b.) their limbs seemed out of proportion.

List of backsprites that were cropped:
-Mew
-Gyarados
-Oddish
-Vileplume
-Magneton
-Slowpoke
-Parasect
-Dugtrio
-Articuno
-Fearow
-Nidoking, Electabuzz, Bulbasaur, Caterpie, Cubone, Eevee, Jigglypuff, Kabuto, Weedle, Kakuna, Tentacool, Squirtle, Shellder, Psyduck, Mankey, Krabby, Poliwag, Pikachu, Paras, Omanyte, Nidoran (M), and Nidoran (F) (these ones had empty space at the bottom of their box)
-Golbat's backsprite had its huge protruding eye toned down


3. A choice of patching in Japanese Blue in-game trades, wild pokemon locations, and Game Corner prize mons. The title screen from Japanese Blue is also patched in. Also (for now), all three patches add back the "Pocket Monsters" text to their games' respective Super Game Boy borders.

Patches (Use either: Pokemon - Red Version (USA, Europe) (SGB Enhanced).gb or Pokemon - Blue Version (USA, Europe) (SGB Enhanced).gb):
-pokered.ips (no quality of life patches)
-pokered-qol.ips
-pokered-qol-alt.ips (no alt frontsprites or change to max number of sleep turns)
-pokeblue.ips (no quality of life patches)
-pokeblue-qol.ips
-pokeblue-qol-alt.ips (no alt frontsprites or change to max number of sleep turns)
-pokebluejp.ips (do not use a Japanese Blue rom--no quality of life patches)
-pokebluejp-qol.ips (do not use a Japanese Blue rom)
-pokebluejp-qol-alt.ips (do not use a Japanese Blue rom--no alt frontsprites or change to max number of sleep turns)


4. Some quality of life improvements were made to HM learnsets. Some mons had their HM learnsets changed to more closely match the learnsets from future generations.

List of Pokemon that had HMs ADDED to their learnset:
-Bulbasaur, Ivysaur, Venusaur
-Charizard
-Pikachu, Raichu
-Nidorina, Nidorino
-Muk
-Rapidash
-Arcanine
-Dragonite
-Diglett, Dugtrio
-Raticate
-Venonat, Venomoth
-Butterfree
-Exeggcute, Exeggutor
-Psyduck, Golduck


5. The following quality of life improvements were also made:

-Professor Oak fight added to post-game on Route 1 (you can fight him as many times as you like)
-A Move Deleter has been added to the Cinnabar Lab lobby
-A Tradeback NPC added to the Celadon Dept. Store 1F for Pokemon that evolve by trading
-Fixed a bug where the bike music would keep playing after falling down a hole, even though you get kicked off the bike
-Low HP alert stops after 3 repetitions
-Sleep can only last 6 turns max (optional)
-Frontsprites for 3 Pokemon (Fearow, Parasect, and Omastar) were replaced with the versions from Japanese Red and Green (optional)
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Thanks and enjoy!
-screamingtrees

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Credit:
Team Spaceworld (documenting and disassembling pokegold-spaceworld)
Danny-E 33 (code to allow larger back sprites)
jojobear13 (ported code from Pokemon Yellow to allow for color in GBC mode)
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Database match: Pokemon - Red Version (USA, Europe) (SGB Enhanced)
Database: No-Intro: Game Boy/Color (v. 20210227-015730)
File/ROM SHA-1: EA9BCAE617FDF159B045185467AE58B2E4A48B9A
File/ROM CRC32: 9F7FDD53