Pokemon HeartGold can communicate with all the DS Pokemon games.
:c)
Yes.
yes. you can trade Pokemon from diamond, pearl, or platinum to heartgold or soulsilver.
you can trade Pokemon from heartgold and soulsilver to your diamond,pearl, or platinum.
You can't talk to your Pokemon in Pokemon Platinum. Only in Pokemon Heartgold and Soulsilver.
its only in pokemon platinum
Technically,yes you can get Arceus in Pokemon Heartgold,but only by trading it to your Pokemon Heartgold game from Pokemon diamond,pearl or platinum.
Cant you can only on Pokemon heartgold search for how do you clone items in Pokemon heartgold and my answer will be there
The answer is no but you can trade Pokemon from if you have a DS
You can't get Darkrai in Pokemon Heartgold. You have to trade it from Diamond, Pearl, or Platinum.
You need to trade it from HeartGold/SoulSilver.
You can't. You need to get Heatran from Pokemon Diamond, Pearl and Platinum and then trade to heartgold and soulsilver.
You can't put a Pokemon in the pokewalker in Pokemon platinum, as the pokewalker was designed for only Pokemon Heartgold & Soulsilver.