you find Gastly at night time in the lakes + if Ur to dumb to no than don't play pearl diamond + platinum
first you need to beat all the gym leaders and go to map 9 and you can find arceus ghost,dark,and fight.
You cant catch Gengar in there, only Gastly and the Rotom in the tv.
catch or defeat palkia and go to lake valor and you Will find azelf
Wobbafet isn't the easiest Pokemon to catch because you need a Poke Radar. You will get a Poke Radar after completing the Sinnohdex. When and if you have it go to all the lakes and use it to catch him/her. You can also trade in from Leaf Green or Fire Red. Hope this helped!
In order to evolve Haunter, u have to trade and it will evolve into a Gengar.
go to the old place with gastly and go the top and talk to the old ladys
You can't catch one in Pokemon Emerald.
you find gastly in the Burned Tower and the Sprout Tower
Evolve a gastly that you can catch in the sprout tower
You catch a ghost pokemon, preferably Gastly, and train it up until it has learnt it.
pet cemetery tower in lavender town after you get the silph scope
You cant catch it. You can catch a gastly, raise it into a haunter. to make it a gengar, you have to trade it and trade it back
just catch a gastly in the tower before the first gym and level him til he evolves
at night in sprout tower or in route east of Violet city.
you have to go to lavender town, with a silph scope. when you get there go into the Pokemon tower and go to second floor. you can only catch gastly and haunter
You cant. You have to catch a gastly then envolve it to haunter then trade with someone and trade back haunter will envolve to gengar!
kill it or catch it
You have to get a scope from the top of the tower in Saffron city then go to the tower in Lavender town and then you need to use it to see the ghosts are Pokemon. then use a pokeball to catch them.