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Red hack: Pokémon Beyond Red and Blue

Sandmeister

Man of Sand
  • 5
    Posts
    3
    Years
    • he/him
    • Seen Jun 1, 2025
    A romhack of Pokémon Red and Blue that includes various features from each iteration of Kanto, along with unused beta content found in the Gigaleaks. Features:

    • Beta versions of the Steel/Dark/Fairy types!
    • Unused Pokémon from beta builds and future generation evolutions, as well as the inclusion of Kanto-exclusive 'mons from GSC (Houndour/Murkrow/Slugma)
    • Added NPCs and trades to help with version exclusive or once per save Pokémon.
    • Tradeback NPC in Celadon.
    • FRLG Oak's Aide rewards! (Everstone + Amulet Coin)
    • Move Deleter + Relearner in Fuchsia and Indigo Plateau respectively.
    • References to hoaxes like Bill's Garden and the Mew under the truck.
    • Tougher Boss trainer learnsets from Yellow version.
    • Gym Leader post-game rematches.
    • Modern Exp. All sharing formula (Still requires 50 Pokémon caught to get)
    • QoL with BW's reusable Repel system and HMs usable in the overworld.
    • Daycare now has a PC, and there's a chance your Pokémon will have an Egg! (Living Dex possible in one save file?)
    • Improved Vitamins and purchasable PP Ups!
    • Hyper Training!
    The goal is to include as many beta features as possible, and some new Kanto-related ones, without changing the feel of Generation 1. Pokémon are only type changed to their modern vanilla counterparts, however regional variants/regional fakes/gimmick forms/paradox forms etc. are NOT included.

    Moves from later generations are only included if they fill out a new type, or act as a signature move for a Pokémon. Otherwise, no major changes have been made to individual species.

    Screenshots
    [PokeCommunity.com] Pokémon Beyond Red and Blue[PokeCommunity.com] Pokémon Beyond Red and Blue[PokeCommunity.com] Pokémon Beyond Red and Blue[PokeCommunity.com] Pokémon Beyond Red and Blue[PokeCommunity.com] Pokémon Beyond Red and Blue[PokeCommunity.com] Pokémon Beyond Red and Blue[PokeCommunity.com] Pokémon Beyond Red and Blue[PokeCommunity.com] Pokémon Beyond Red and Blue[PokeCommunity.com] Pokémon Beyond Red and Blue[PokeCommunity.com] Pokémon Beyond Red and Blue[PokeCommunity.com] Pokémon Beyond Red and Blue[PokeCommunity.com] Pokémon Beyond Red and Blue[PokeCommunity.com] Pokémon Beyond Red and Blue


    Credits
    Spoiler:


    Download
    And an online patcher can be found here!

    Google Sheets containing as much documentation as possible is also available! Base Stats, learnsets, type chart, etc.
     
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    Hey, this looks pretty neat, I'd love to give this a shot when I get some time :D

    If it's not a huge problem, though, could you add Kanto Expansion Pak to the 'code referenced from' list? I had a look at your code and spotted some parts that I definitely recall writing/adding, so having the right credit would be nice. No problem otherwise, though!
     
    Hey, this looks pretty neat, I'd love to give this a shot when I get some time :D

    If it's not a huge problem, though, could you add Kanto Expansion Pak to the 'code referenced from' list? I had a look at your code and spotted some parts that I definitely recall writing/adding, so having the right credit would be nice. No problem otherwise, though!
    My bad! I was using code that was on the pret tutorials page, will add the proper credits ASAP.
     
    hay i was just wondering, is there any battle facility at all or is it just one and done like normal R/B/G/Y?
    I did intend to add a battle facility, but I ended up cutting it back. Maybe in the future I'll make an update to include one!

    There's still a decent amount of stuff to do when you're done with the game, like Gym Leader rematches, a harder E4 and the Oak battle.
     
    It appears that leveling up Golbat to level 41 crashes the game, I don't know if it is emulator specific but I'm using MyOldboy
     
    It appears that leveling up Golbat to level 41 crashes the game, I don't know if it is emulator specific but I'm using MyOldboy
    I haven't tested the hack on multiple emulators, but on BGB it works as intended. Maybe it IS an emulator issue? Either way, sorry if you lost any progress :,)

    If you're playing on mobile I'd recommend Retroarch and testing out which core has the more accurate emulation.
     
    I did intend to add a battle facility, but I ended up cutting it back. Maybe in the future I'll make an update to include one!

    There's still a decent amount of stuff to do when you're done with the game, like Gym Leader rematches, a harder E4 and the Oak battle.
    alright..... well im just gonna wait and for one to be added then. ive just been picky of the hacks i play cuz being able to go back to catch and train up mons for competitive in places like that is what i look for in the games. wish you luck on the hacks updates and any future progress tho!!
     
    Really like the idea of what this hack is. If I'm reading it correctly, then it might be something Ive been really wanting since KEP dropped. I do have a few questions. Ive only played a little so far but what is the line that looks like an arrow/checkmark. The color under it seems to match my health bar; I thought at first it was an exp meter? It seems to change with my health and I'm wondering if it's a visual glitch or a feature I am not understanding. Also is squirtles backsprite its beta design? Roster-wise -- what makes it different than Kanto Expansion Pack. Is it the same pokemon or were there changes? Also I know regional forms aren't included but I'd love to at least see Alolan variants of Exeggutor and Marowak; At least lorewise Alola feels like it would make sense given how close Alola is supposed to be to kanto. Also I am fighting the rival and it has a pokeball icon next to his pidgey. Is that intended? I figured for wild pokemon it would but I wasnt expecting to see it on a trainer's pokemon
     
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    Ive only played a little so far but what is the line that looks like an arrow/checkmark. The color under it seems to match my health bar; I thought at first it was an exp meter?
    It IS an EXP meter! It changes with the HP bar's palette because of how the SGB's coloring renderer works. Basically, chunks of the screen are made into one palette, and it's not really easy to decouple the section where the bar is from the color the HP bar uses.
    Also is squirtles backsprite its beta design?
    Sort of! The majority of the vanilla Pokémon use their back sprites from the Spaceworld demo. Future Pokémon that are added in like Slugma are also using their beta designs.
    what makes it different than Kanto Expansion Pack. Is it the same pokemon or were there changes?
    Included in the OP, there's a link to a spreadsheet with information. Vanilla Pokémon's stats are unchanged, some have slight moveset tweaks which I'm working on documenting (but can be looked at here), baby 'mons and future evolutions are included, with most of the babies that weren't planned for RBY being daycare exclusive. (The original RBY babymons can be seen on this page of the CuttingRoomFloor)
    The rest of the dex is filled with various beta and unused designs.

    My interpretations of the beta 'mons aren't 1-to-1 with the KEP hack, I more default to the Helix Chamber's theories and my own interpretations, like Gawarhed being Normal/Dragon instead of Rock as in KEP.
    And yeah, I do not plan on including any of the regional variants, sorry!
    Also I am fighting the rival and it has a pokeball icon next to his pidgey. Is that intended?
    Originally no, but I decided to leave it in anyway. I found myself often forgetting if I caught something and it ended up being helpful even in trainer battles.

    Hope that clears a lot of it up!
     
    Hello :) I've been really liking this game so far. I've been trying to complete a living dex/ Professor Oaks Challenge and it's made me notice a few bugs.

    I have been trading between 1 version of Beyond Red and 1 version of Beyond Blue
    Mainly to all 3 starters at the beginning of the game and for the early game version exclusives (Ex: Sandshrew and Vulpiii) and the early game trade evolutions before getting access to the trader (Ex: Alakazam, Golem, Machamp)

    I hope that it's just my emulator issue.
    (MyOldBoy not the free edition)

    Every time that I try to collect the new items (Everstone, Amulet coin and, the Exp. All) Pokémon in boxes 2 and 3 seem to get corrupted :(

    Another weird bug I found is when you either evolve a poliwag or have seen a 2nd Wild 1 after catching the 1st it seems to corrupt the last Pokémon in box 3 (for me at least)
    I was fishing for another poliwag in Fuchsia City behind the fishing guys house (the 1 who gives you the good rod)

    What I've noticed with when the corruption in the boxes is happening is that the Exp. Bar starts acting really weird. It shows that it's full when its not and then when an opposing Pokémon is attacking it'll go back to normal for that split second and then when the attack is over it'll go back to saying that it's full.

    The last bug I've seen is when I tried to deposit a Dusk Stone in the PC while I had multiple in my bag. It basically glitched out how many I had and I could never put all of them away. The only way that I could get rid of them out of my bag was to sell the glitched items to the mart.
    (At the Celadon Department Store where I bought them)
    I have not tried that with other new evolution Items like the Ice Stone or Upgrade.

    I am very happy the MyOldBoy has save states, mainly because my 1st playthrough got corrupted in the boxes right after reaching Rock Tunnel and getting the Everstone.
    There was no way to save that run and it was hard to start over after all that grinding for all those Mons (I had every Pokémon that was possible to get before entering Rock Tunnel) Except all the Stone Evos- I even had a Crobat on my team :,)

    So far I just got to Fuchsia City on My 2nd Playthrough and it took over a week and now I just found that Poliwag bug. Luckily I had a save state to fall back on.
    I made sure to make 1 before talking to the Professors Aide to get the Exp. All. (Which itself can cause some corruption of the boxes hence the save state)

    Overall I'm not writing this to dissuade anyone from playing this ROM Hack. It's the Exact opposite. I love this ROM Hack and I just wanted to let people know so if they (could/would) encounter these bugs they can just be careful and avoid any damage to their Save File. However this could just be a from running these games on MyOldBoy.

    Two last questions I had was just that I wonder if Porygon-Z will ever be added? I think that it's the only Mon missing from 1 of the evolution lines🤔 and that if it would be possible to add more Pokémon storage?

    Anyway that's the end of this LOOONG comment and just so everyone's clear on it; I love this Rom Hack and I HIGHLY recommend it. I literally made an account on this website just to let people know my experience with this Hack 😅
     
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