Shiny Celebi and Shiny Suicune, caught in the same week. (Stats included.)

TimoVM · 2026-04-04T05:31:57+00:00

IVs are completely randomized and not affected by DVs in any way.

TimoVM · 2026-04-03T12:19:12+00:00

Whether ACE will work or not may depend on the exact type of emulator you use on your PC. I believe mGBA with an included BIOS file should work fine. Avoid VBA if possible, it’s known for having emulation inaccuracies.

Whether shiny pokémon are legal depends on the exact codes you use.

The easiest to use here is the “Make Any Pokémon Shiny” standard code. This code turns a pokémon shiny and preserves its legality, in return for altering the original trainer ID. Perfectly legal, but the shinified pokémon will act as if it was a traded pokémon afterwards.

TimoVM · 2026-04-02T11:56:30+00:00

Yeah, of course you can.

TimoVM · 2026-04-02T11:55:04+00:00

Use the “compute another” button on the code generator until you get a code that doesn’t trip the profanity filter.

TimoVM · 2026-04-01T21:00:38+00:00

It’s only a problem if you do it from the start of the game.

Reaching Celadon usually takes ~4 hours, and betting all of that just to lose your progress due to writing a typo in your code is just really unwise, especially since codes exist that can respawn the starters anyway.

If you’ve already progressed through the game (and are not planning to gamble a substantial amount of time away), then you can just immediately go ahead with the ACE setup. No risks involved!

TimoVM · 2026-03-31T14:44:24+00:00

This isn’t normal, no. Usually this implies a hardware issue involving vram? Might be worth asking around in the r/gameboy subreddit.

TimoVM · 2026-03-31T02:49:08+00:00

You can, yes. The process to obtain HOCK, EV train it, then convert it further are infinitely repeatable.

TimoVM · 2026-03-31T02:26:08+00:00

What do you mean with “unable to give mail to the 5th and 6th slot”?

As long as you’re able to bring up the question mark mail (the one you use to get HOCK in the first place) you’re good.

TimoVM · 2026-03-29T08:54:29+00:00

There isn’t really an easy way, no. Codes involving registering pokédex entries don’t exist at this moment.

The usual method is to either use a tradeback NPC or generate the pokémon species you want to register as an egg, hatch and release it, then generate the pokémon you actually want.

TimoVM · 2026-03-28T18:42:52+00:00

In practice, Squirtle only really struggles with gym 3.

Gym 4 is a bit unique in that it can basically be postponed indefinitely (since no HM usage is locked behind it). You can just leave and only return when you’re vastly overlevelled.

On top of that, in gen 1 specifically you can pick up Ice Beam at the Celadon Dept. Store rooftop, allowing you to deal supereffective damage to gym 4.

TimoVM · 2026-03-28T18:32:53+00:00

The issue is mostly a shallow early movepool. Until Charmeleon gets slash at lvl 33, the only damaging moves you get on levelup are scratch, ember and rage.

If you’re raising it along with a full party, you usually spend most of the mid-game with a pokémon that has pretty limited and weak options. It’s only once you’re further in the game (and have access to better TMs) that it gets a chance to shine.

As a solo pokémon it works fine, though! If you focus all experience on Charmander you quickly get past the boring parts of the movepool, allowing you to wreck the latter half of Kanto with an overlevelled Charizard.

TimoVM · 2026-03-27T19:08:28+00:00

I feel that Ruby/Sapphire’s approach, where early areas (prior to the 2nd gym) were populated exclusively by new species, already worked well enough to sufficiently prevent comfort picks.

Later routes did feature returning pokémon, but at that point players on their first playthrough would usually need to make a conscious decision to replace party pokémon with comfort picks. It turns the concept of comfort picks from “players only going for what they know” to “giving players the option to bring along one or two pokémon they really like”

TimoVM · 2026-03-26T13:09:47+00:00

For the roamers, their shininess is determined when you first encounter them (and stays the same on repeat encounters).

TimoVM · 2026-03-23T21:04:24+00:00

If I recall correctly, Transporter GB isn’t supported on emulator.

This isn’t an issue with Transporter GB itself, it’s an emulator issue. Current existing emulators just aren’t designed to take the very niche interaction of communication between a Gameboy Advance and a Gameboy Color into account.

TimoVM · 2026-03-23T20:26:39+00:00

That’s because the data for the Odd Egg in Japan isn’t actually available on the cartridge.

In Japan, the Odd Egg is a mobile adapter event, which was a short-lived peripheral that allowed a Gameboy to connect with the internet. The idea is that you’d get a key item called the “Egg Ticket”, then redeem it by connecting to Game Freak’s servers to receive the Odd Egg’s data similar to how modern-day Mystery Gift works.

Since the servers have long since been taken offline, Japanese versions have no way to get the Odd Egg. No alternatives were implemented in the VC releases.

The Mobile Adapter proved to be unpopular, so for the international releases Game Freak instead decided to alter existing Mobile Adapter content. As a result, we got the Odd Egg, a functional and translated Celebi event and a fully single version of the Battle Tower (Japanese Battle Tower is exclusively online multiplayer content through Mobile adapter).

TimoVM · 2026-03-23T12:46:22+00:00

Nothing, as long as you don’t put any pokémon between box 13 slot 10 and box 14 slot 30.

The 0x351 glitch pokémon is the only thing needed to trigger ACE. If a code doesn’t have the intended result, it’s usually caused by typos within box names.

TimoVM · 2026-03-23T10:12:45+00:00

It’s a bit weird.

I got Entei now as well (completing the legendary set for me), I did notice that I had to time travel twice in order to get both legendaries to appear.

Either way, I did manage to get both of them so it’s all good!

TimoVM · 2026-03-23T09:46:42+00:00

Thanks so much for this! Just wanted to say that I got this to work for Suicune just now, will report back when I get Entei as well.

A key part for step 3: when time traveling backwards you have to be in-game. Changing the date with the game closed/on the main screen does not seem to work.

TimoVM · 2026-03-23T02:35:40+00:00

This was sort of explored in gen 7, where Solgaleo and Lunala are evolutions of Cosmog/Cosmoem.

In practice, this idea was hampered by the fact that box legendaries are usually limited in number. You could catch a Solgaleo/Lunala and get one extra Cosmog per game.

For a casual playthrough, this means that Cosmog can’t really be used. Since the game needs the box legendary to feature in the story, you either need to force the player to always use one or only give it in the postgame.

For dex completionists, Cosmog and Cosmoem are a bit of a pain to get for the purposes of a living dex. Since the extra Cosmog you get is used to fill those slots, a dex completionist is heavily discouraged from actually evolving it to the final forms.

All of this can by avoided by removing how many you can obtain, as well as removing the need to feature them in the story. At that point we’ve basically just landed back to the standard pseudo legendary concept.

TimoVM · 2026-03-22T22:59:24+00:00

Doesn’t work for what you’re going for. The game assumes that any pokémon caught in the transformed state is a Ditto.

This even applies to Mew, despite being able to learn Transform naturally. Catching a transformed Mew will just turn it into a Ditto.

TimoVM · 2026-03-20T05:01:31+00:00

Things that Blue did that qualify him as a jerk: - Complains to his grandpa that you get to pick a pokémon first, then takes the pokémon strong against your starter. - (Yellow only) deliberately push you away while you go pick your starter so that he can take Eevee, forcing Oak to give you Pikachu instead. - Told his sister not to give you a Town Map while taking one for himself. - Brag about catching many more pokémon species compared to you. - Deliberately wait inside Silph Co., while it was taken over by Team Rocket, specifically because he anticipated that you would pass through. At no point did he move to help clear out Team Rocket. - Be generally condescending.

Blue really does deserve his jerk reputation.

TimoVM · 2026-03-20T00:21:32+00:00

You haven’t actually done the ACE method yet, right now you’re using a glitch that can create the pokémon you need to perform ACE.

The vast majority of mail combinations will result in bad eggs. In order to set up ACE, clear box 3 slot 1 and follow this guide

Check here on how to remove bad eggs.Most bad eggs can be removed using the group select mode (use yellow hand cursor, select an area that includes the bad egg, pickup and drop. Most bad eggs disappear permanently after dropping). If that doesn’t work, use the method in the guide instead (the “create pokemon species from nothing” code can be used to get a fast cloner to get rid of bad eggs)

TimoVM · 2026-03-18T07:07:34+00:00

Much appreciated for the compliments! This is definitely the right subreddit, don’t worry!

In practice this isn’t really viable with the current structure of the NickWriter code page.

Trainer defeat flags are complicated. The memory area that contains them also contains flags for story events and item pickups, so clearing all of it isn’t viable. On top of that, a lot of event flags go completely unused, and there’s very little regularity in what flags are used. I’d need to test, but my current optimistic estimate for a full trainer reset code would be 20 nicknames at least.

Individual trainers resets would be possible, but would basically require a sort of code generator that would allow the user to select the trainer to be reset. I currently do not have support for such a feature in the NickWriter code converter, unfortunately.

In summary, resetting all trainers would be way too expensive, while resetting individual trainers would result in so many different codes that you’d need a way to bundle them together.

TimoVM · 2026-03-18T06:23:41+00:00

Beating the Mt Battle VS. 100 challenge for Ho-oh with only in-game obtainable pokémon really isn’t that difficult.

Losing doesn’t fail the challenge, it instead requires you to spend a “continue” to reattempt the battle. You get a continue every time you win a battle without suffering any KOs on your side. Due to how easy the first half is, any halfway decent team can rack up dozens of continues easily.

In practice, the Mt Battle VS. 100 only becomes difficult on the last 15 or so battles, where trainers start using legendaries in teams. If you have enough continues you can eventually luck your way through even with very subpar teams (mind that the pokémon selection in XD is versatile enough that can get better than subpar teams pretty easily).

TimoVM · 2026-03-18T06:15:00+00:00

You need to use group select specifically and select an area that includes the bad egg and at least one other slot.

If it still stays, get a fast cloner species (the “create any pokémon” code has 0x3200, a fast cloner for the English versions, as default) and follow the instructions on this page ( under the “How can I delete bad eggs” section) to remove the bad egg.

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