User:CytricAcid/Beginner's Guide To ACE/US Red and Blue Guide

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WARNING

Certain steps in this guide will lead you to a game state where a mistake could crash the game, or worse, delete your save file. Make sure to double and triple check your setup and follow instructions properly before using any glitch items!

2. Get 8F through Dry Underflow and Celadon Looping trick

Get a ×255 item stack

The goal of this step is to get a stack of any item ×255 in the bag. Since the normal limit for an item stack is ×99, this goal will require a glitch. Namely, we will duplicate the 6th item in the bag by encountering either MissingNo. or 'M (00) through the old man glitch.

1. Have any tossable item (i.e. anything that is not a Key item) as the 6th item in the bag.
   • Ideally, it should be a ×1 item stack (you can toss or use any extras), which will make later steps easier (in terms of having less math to worry about), .
   • A good candidate is a PP Up, which is a rare item that you will need to use on the Tentacool for the party setup.
2. Go to Viridian City, and talk to the old man who shows you how to catch Pokémon. Watch his catch demonstration (by saying "No" when he asks if you are in a hurry).
   
3. Immediately Fly to Fuchsia City (without otherwise leaving Viridian City).
   • Side note: The more well-known location to perform the old man glitch is the eastern coast of Cinnabar Island, but it actually works with any "eastern shore tiles" that can be reached from a Fly destination without going through an area with grass encounters. This guide will use the shore tiles on the east side of the Seaform Islands because they are closer to a location that can help us get 8F easily later.
4. From Fuchsia City, Surf down and then left to reach this location:
   (TODO: Add screenshot)
   • For safety, save the game now, since there is a possibility we may need to reset later.
5. Surf along the shore for wild encounters. We are looking for the glitch Pokémon MissingNo. or 'M (00), which looks like one of these:
   
   • If you encounter a normal Pokémon instead, just keep looking. If you encounter a Trainer or another glitch Pokémon (although the latter should be impossible on English games), immediately reset for safety.
   • Side note: As mentioned on the old man glitch page, the possible encounters depend on the player's name, but at least one of the glitch Pokémon we are looking for should always be available.
   • To ensure that the glitch has worked, check the quantity of the 6th item in the bag. It should have increased by 128, i.e. if it was a ×1 item stack in the beginning, it should now be ×129. However, since the game is not designed to display three-digit numbers as the quantity of an item, it will look glitchy like this:
     (TODO: Add screenshot)
6. You can now escape from the battle, then toss or use two of your 6th item so that you have ×127 (if you started with an item stack that was not ×1, you still need to get rid of enough so that you have ×127).
   • Side note: If your 6th item was one that could be used in battle (e.g. a Potion), you can use two of them in battle instead, and then catch the MissingNo. or 'M, which will immediately duplicate your 6th item again, without needing a second encounter. However overall the added complexity is probably not worth it.
   • Now is a good time to make another safety save.
7. Repeat step 5, i.e. surf along the shore for another wild encounter with a MissingNo. or 'M.
   • If you have done everything correctly, the encounter should increase the quantity of the 6th item to 255, which is the goal for this section. You can now escape from the battle and start the next section.