Tweaking

Tweaking is a glitch that first appeared in the fourth generation of Pokémon. It is caused by pressing the left and right buttons continuously whilst holding the up/down button and riding on a bicycle in fourth gear. It is most easily done in Jubilife City. This glitch will throw up invisible walls or cause a section/route to become black, only seeing the shadows of trainers, items etc. In some cases, the player will be able to walk through a black wall. Tweaking seems to have no negative consequences on the game's data. However, there is a slight chance that while you are tweaking, the game will freeze. This is solved by simply turning off the game and turning it back on.

According to some, tweaking may allow players to catch Arceus, Shaymin, and Darkrai; however, this is unconfirmed.

External Links

Pokémon Diamond/Pearl Tweaking Glitch

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