You can but not many
You can't mine underground in either Pokemon Heartgold or Soulsilver, but you can mine underground in Pokemon Diamond, Pearl, Platinum.
Mew cannot be caught in the wild in Pokemon Diamond and Pearl. You need the action replay code.
No
In Diamond & Pearl? Impossible without migrating, trading, or Action Replaying.
you can only get shieldon in pearl
lost towerfloor2 and underground rare in underground
No sorry
You can but not many
No. The underground is only in Pearl, Diamond and Platinum.
An action replay DS does work on Pokemon Diamond & Pearl I use it all the TIME!
you can if you have an action replay
you can only find a cranidos on diamond and a shieldon on pearl
You can't mine underground in either Pokemon Heartgold or Soulsilver, but you can mine underground in Pokemon Diamond, Pearl, Platinum.
this is the same as Pokemon platinum, they are in the underground, they do take a while to find.
Mew cannot be caught in the wild in Pokemon Diamond and Pearl. You need the action replay code.
By luck or by action replay codes.