Anyone still have Pokémon Red or Blue? Well, if you do, and you want to duplicate your items, then read this!

Steps

  1. 1
    Get the item you want to duplicate and put it in the sixth item slot of your bag/inventory.
  2. 2
    Fly to Viridian City and walk north until you reach an old guy. Talk to him and when he asks you if you're in a hurry, say "No". He'll then show you how to catch Pokémon. Watch him do it.
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  3. 3
    Fly to Cinnabar Island and surf on the right side of the island until you find Missingno. (Just a bunch of glitchy-looking blocks).
  4. 4
    Fight it and after you win, the item in the sixth slot will have a glitch box instead of a number.
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Community Q&A

  • Question
    Can I do it more than once?
    Community Answer
    Community Answer
    Yes, but it only works on items you're holding less than 128 of. If you encountered Missigno, you should have 128 more of the item. If you encountered 'M, you will have exactly 128. You can always deposit items in your pc and continue, though.
  • Question
    Can this be done on the 3Ds S download game?
    Community Answer
    Community Answer
    Yes, every glitch you can do on the Gameboy can be done on 3DS.
  • Question
    Can I do this on an emulator?
    Community Answer
    Community Answer
    Yes, you can, I have personally. There are no extra steps needed, and it helps if you stay on the tile that is half water and half land when you do this.
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Warnings

  • MissingNo. will not break your game. It's true that it may clutter the graphics, but this can be fixed by looking at another Pokémon's stats. It's also true it could freeze your game when depositing the Pokémon to the pc, but only if it's level 0. The only permanent glitch would be the messed-up Hall of Fame, but this problem happens also when seeing MissingNo. -not only when catching it.
    ⧼thumbs_response⧽
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About This Article

Madeleine Flamiano
Co-authored by:
Role-playing Game Enthusiast
This article was co-authored by Madeleine Flamiano. Madeleine Flamiano is a Role-playing Game Enthusiast based in Berkeley, California. She has over 20 years of gaming experience and is an avid gamer in all parts of her life—she's especially fond of tabletop board games and the world of Pokémon. Pokémon Crystal Version is her favorite game in the franchise. Some of her greatest feats were evolving Eevee to a Level 99 Umbreon and collecting every legendary bird Pokémon. Her professional path started at NaNoWriMo, where she scripted a summer-long world-building series and hosted its Virtual Write-Ins. She has written seven books for DDCO Publishing, which specializes in LitRPG and is operated by New York Times Bestseller JA Cipriano. She has ranked in the Top 100 list for Dark Fantasy, Sword & Sorcery, and Fantasy Romance. She was voted by her peers as "The Perfectionist" on Roleplay Adventures, a SERP for forum roleplaying. Madeleine graduated from Mills College with a B.A. in English with a concentration in Literature and a Minor in Philosophy. This article has been viewed 118,690 times.
24 votes - 77%
Co-authors: 19
Updated: January 28, 2017
Views: 118,690
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