Pokémon Black and White versions

In the Dream World, which you play on your PC, you encounter wild Pokemon on Dream Island. Different Pokemon are in different areas, such as Aerodactyl in the sky and Lotad or Magikarp in ponds. You can capture these non-Isshu Pokemon and then transfer them over to your game when you’re done.
Makomo lends you her Munna so that you can access the Dream World.
You can play mini-games in the Dream World, and if you perform well, the Pokemon you play with will come back with you to Black and White.
You can also trade Items with other characters.

Yay.