No, it's soul silver exclusive.
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haunter has to be traded to evlove haunter evolve into gengar in level 42
Surf over to Cianwood City to find the pharmacy in Heart Gold.
you have to use hm rock smash on rocks to find them.
Hi you get Mareep in three routes.All the routes are route 32,42,43. . .Gotz heart Gold
You can find them by surfing and fishing.
No.
curmen cave
At the bottom of the Whirl Islands.
You find it in the game not in real life
Use rocksmash
this is also for heart gold