First, you must have the Enterna Gym Badge, the feild move Cut and a Game Boy Advance (Any of them work).
Once you have all the above, walk into Enterna Forest and walk West for a bit. When you see some bushes inline with a white picket fence, walk North towards them and cut them down with the feild move Cut. Walk Northinto the Old Building. This place is called the Old Chateu.
Once your inside, explore the building. Once you have done exploring the whole building, you may have noticed a purple figure in a purple picture with red glowing eyes. The eyes look at you when your in the building with it and the two either side of it. Save your game and turn off whilst inside the Old Chateu if you haven't put the Game Boy Advance Game in, if you have already got it in, don't turn off but do save. Walk to the picture and click the A button and you should be in a battle with a Gengar.
Make Sure you have some Pokeballs with you since the Gengar most likely won't hang around if you run from the battle.
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!
to my knowledge you cant. some one has to trade you a hounter. the hounter will immediately evolve into gengar. you can just trade it between two of your own games, ifyou have access to two DSes
In snowpoint city there is a girl who wants to trade one. Trade with her or catch a ghastly and train it. Next, trade and trade back haunter and it will be a gengar!!
yeah you can catch wild gengar and rotom in there!:)
if you find a gastly in lavender tower after you get silph scope you can find a gastly and catch it and it will level up evolve into haunter then level it up and it evolves into gengar! wrong! the correct way is to catch gastly in lavender town in the place with all the graves. then evolve it into haunter (i think at lvl 22, but im not sure) then trade it and it evolves, then you can trade it back and you have gengar.
There is no place that you can catch a Gengar and he can only be obtained by evolving Haunter via trade.
Gengar can only be obtained by trading a Haunter.
you can't catch a gengar. you catch a haunter then trade it so it evolves. make sure its not holding an everstone. ;)
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!
no maybe haunter and ghastly though hmmm gengar is too quick
You'll need to trade for a Haunter or a Gengar in the GTS or from someone.
You cant catch Gengar in there, only Gastly and the Rotom in the tv.
You can't in order to get a gengar go to the Pokemon tower in lavender town and catch a ghastly then trade it to a friend or another gba and trade it back so it will evolve into a Gengar.
to my knowledge you cant. some one has to trade you a hounter. the hounter will immediately evolve into gengar. you can just trade it between two of your own games, ifyou have access to two DSes
evolve it by trading it with another player
Gengar is never a wild Pokémon and therefore is not catchable. The only way you can obtain it is to trade a Haunter.
In Pokémon Pearl, in order to catch Gengar you can find wild Gastly in Lost Tower and Old Chateau and then after catching one you can raise it until it reaches Level 25 at which point it will evolve into Haunter and then you can trade Haunter to another trainer in order to evolve it into Gengar and then you can catch wild Haunter in Turnback Cave and you can only catch wild Haunter in Old Chateau in the event of Ruby, Sapphire, FireRed, LeafGreen or Emerald inserted into the Gameboy Advanced slot and then you can evolve Haunter into Gengar by trading Haunter to another trainer.