Look on your map. Go to a place that is close to the end of the map, where there are areas you cannot reach or go any further. Ride your bike through a Route (rather then a city) and encounter some Pokemon. Defeat some, run away from some, catch some, or damage a Pokemon's health once and run away. As soon as you hit the water's edge or an area that cannot be run through (for example, trees or a stone platform), save the game. When you return to your game, instantly press the direction facing the obstacle that could not be walked or ran through. You will start running through the objects. The top screen will indicate that you have reached a place called "Mystery Zone". There will be faint music playing, like that of the area where the PalPark is located, and you may bump into something. Just keep on holding the D-pad and you will eventually get through. You will soon reach the game's limits; where it just shows infinite black abyss. This is very difficulty to do, and will require multiple attempts and a very long time. Note: This is not guaranteed to work with every game. also, you cannot use your bike or open the menu. This is not recommended at some points in the game; use with caution.
