Pokemon Heart Gold/Soul Silver Wi-Fi Event – #1 Yellow Forest
In Pokemon Heart Gold and Soul Silver you can get a new route to go walking on the PokeWalker. It is made up of forest and Pikachu! You can catch rare Pikachu with Surf or Fly too!
Japan: September 18th 2009 to November 10th 2009, Japan: 16th February 2010 to February 28th 2010, America: April 1st 2010 to May 5th 2010, Europe: April 1st 2010 to May 5th 2010.