Glitches

Glitches are mistakes in a game's programming, which cause mistakes during gameplay. There are advantageous glitches, and problematical glitches. Almost all the pokémon video games have these, especially the earlier ones.

Missingno Glitch
- This glitch allows you to clone items to numbers higher than 99, Capture pokémon over the level of 100, and see safari zone pokémon with standard balls.

Item Duplication/Higher than 100

 * 1) Go to viridian city, and speak to the old man who complained about his back near the start of the game.
 * 2) Talk to him, buit say that you do not need help.
 * 3) Fly to Cinnabar island, and place the item you wish to clone in the sixth place of you inventory.
 * 4) Surf on the east coast, but always right next to the land, do not surf out to sea, or too far south.
 * 5) While surfing you will encounter:
 * Standard sea pokémon. (e.g. Tentacool)
 * Strange pokémon that do not belong here. (e.g. Pidgey)
 * Pokémon higher than level 100.
 * Missingo


 * 1) After defeating or capturing Missingo, the item in sixth place will be multiplied to numbers higher than 99. You can carry on seeing Missingos, but the item will not clone again unless you start the glitch again from step 1.
 * 2) You can also carry on fighting or capturing level 100+ pokémon.

Notes:
 * It is highly recommended that you do not capture Missingo. It is not very powerful, and may have permanent and damaging effects on your game.
 * After capturing a level 100+ pokémon it will only level-up effectively with Rare Candies. If it levels up in a battle it will go back to level 100.

- Upon the discovery of the glitch, a number of players had the bright idea of using Missingno to clone their Rare Candy. This gave them quick, easy access to the higher levels which would normally require hours of battling to reach. This was frowned upon by many: the whole point of the game was to raise Pokemon through battling and skill. Still, the glitch is now etched into every Pokemon player's mind.